研究業績

2023

1. H. Aizawa, T. Sato, S. Maki-Yonekura, K. Yonekura, K. Takaba, T. Hamaguchi, T. Minato, H. M. Yamamoto,
   Nature Commun., 14, 4530 (2023).

2. A. J. Urban, H. M. Yamamoto,
   Strong and Tunable Near-Infrared Circular Dichroism in Helical Tetrapyrrole Complexes
   Chem.Eur. J., 29, e20230094 (2023).

3. R. Malatong, T. Sato, J. Kumsampao, T. Minato, M. Suda, V. Promarak, H. M. Yamamoto,
   Highly Durable Spin Filter Switching Based on Self-Assembled Chiral Molecular Motor
   Small,19, 2302714 (2023).

4. Y. Kawasugi, H. Suzuki, H. M. Yamamoto, R. Kato, N. Tajima,
   Strain-induced massless Dirac fermion state of the molecular conductor α-(BEDT-TTF)₂I₃
   Appl. Phys. Lett., 122, 123102 (2023).

5. R. Nakajima, D. Hirobe, G. Kawaguchi, Y. Nabei, T. Sato, T. Narushima, 
   H. Okamoto, H. M. Yamamoto,
   Giant spin polarization and a pair of antiparallel spins in a chiral superconductor
   Nature, 613, 479-484 (2023).

6. Y. Oshima, T. Takenobu, J. Pu, K. Ishiguro, R. Kato, H. M. Yamamoto, T. Kusamoto,
   A Memristive Oscillator
   Adv. Phys. Res., 2023, 2300117 (2023).

2022

1. D. Hirobe, Y. Nabei, H. M. Yamamoto,
   Chirality-induced intrinsic charge rectification in a tellurium-based field-effect transistor
   Phys. Rev. B, 106, L220403 (2022).

2. J. Kishine, H. Kusunose, H. M. Yamamoto,
   OntheDefinitionof ChiralityandEnantioselectiveFields
   Isr. J. Chem., 62, e2022000 (2022).

3. K. Hashimoto, R. Kobayashi, S. Ohkura, S. Sasaki, N. Yoneyama,
   M. Suda, H. M. Yamamoto, Takahiko Sasaki,
   Optical Conductivity Spectra of Charge-Crystal
   and Charge-Glass States in a Series of θ-Type
   BEDT-TTF Compounds
   Crystals, 12, 831 (2022).

4. A. Kato, H. M. Yamamoto, J. Kishine,
   Chirality-induced spin filtering in pseudo Jahn-Teller molecules
   Phys. Rev. B, 105, 195117 (2022).

5. T. Thomas, T. Thyzel, H. Sun, J. Müller, K. Hashimoto, T. Sasaki, H. M. Yamamoto,
   Comparison of the charge-crystal and charge-glass state in geometrically frustrated organic conductors studied by fluctuation spectroscopy
   Phys. Rev. B, 105, 205111 (2022).

6. Y. Kawasugi, H. M. Yamamoto,
   Simultaneous Control of Bandfilling and Bandwidth in Electric
   Double-Layer Transistor Based on Organic Mott Insulator
   κ-(BEDT-TTF)₂Cu[N(CN)₂]Cl
   Crystals, 12, 42 (2022).

2021

1. D. Sakamaki, S. Tanaka, K. Tanaka, M. Takino, M. Gon, K. Tanaka, T. Hirose, D. Hirobe, H. M. Yamamoto, H. Fujiwara,
   Double Heterohelicenes Composed of Benzo[b]- and Dibenzo[b,i]phenoxazine: A Comprehensive Comparison of Their Electronic and Chiroptical Properties
   J. Phys. Chem. Lett., 12, 9283-9292 (2021).

2. H. M. Yamamoto,
   Phase-Transition Devices Based on Organic Mott Insulators
   Bull. Chem. Soc. Jpn.,  94, 2505–2539 (2021).

3. Y. Kawasugi, H. Masuda, J. Pu, T. Takenobu, H. M. Yamamoto,
   R. Kato, N. Tajima,
   Electric Double Layer Doping of Charge-Ordered Insulators α-(BEDT-TTF)₂I₃ and α-(BETS)₂I₃
   Crystals, 11, 791 (2021).

4. Y. Kawasugi, H. Masuda, M. Uebe, H. M. Yamamoto, R. Kato, Y. Nishio, N. Tajima,
   Pressure-induced phase switching of Shubnikov–de Haas oscillations in the molecular Dirac fermion system α−(BETS)₂I₃
   Phys. Rev. B, 103, 205140 (2021).

5. F. Pop, C. Meziere, M. Allain, P. Auban-Senzier, N. Tajima, D. Hirobe, H. M. Yamamoto, E. Canadell, N. Avarvari,
   Unusual stoichiometry, band structure and band filling in conducting enantiopure radical cation salts of TM-BEDT-TTF showing helical packing of the donors
   J. Mater. Chem. C, 9, 10777 (2021).

6. H. Yamakawa, T. Miyamoto, T. Morimoto, N. Takamura, S. Liang, H. Yoshimochi, T. Terashige, N. Kida, M. Suda, H. M. Yamamoto, H. Mori, K. Miyagawa, K. Kanoda, H. Okamoto,
   Terahertz-field-induced polar charge order in electronic-type dielectrics
   Nature Commun., 12, 953 (2021).

7. Y. Nagaoka, M. Suda, I. Yoon, N. Chen, H. Yang, Y. Liu, B. A. Anzures, S. W. Parman, Z. Wang, M. Grunwald, H. M. Yamamoto, O. Chen,
   Bulk Grain-Boundary Materials from Nanocrystals
   Chem, 7, 509–525 (2021).

8. R. Yoshimoto, S. Yamashita, H. Akutsu, Y. Nakazawa, T. Kusamoto, Y. Oshima, T. Nakano, H. M. Yamamoto, R. Kato,
   Electric dipole induced bulk ferromagnetism in dimer Mott molecular compounds
   Sci. Rep., 11, 1332 (2021).

2020

1. A. Pachariyangkun, M. Suda, S. Hadsadee, S. Jungsuttiwong, P. Nalaoh, P. Pattanasattayavong, T. Sudyoadsuk, H. M. Yamamoto, V. Promarak,
   Effect of thiophene/furan substitution on organic field effect transistor properties of arylthiadiazole based organic semiconductors
   J. Mater. Chem. C,  8, 17297-17306 (2020).

2. Y. Unozawa, Y. Kawasugi, M. Suda, H. M. Yamamoto, R. Kato, Y. Nishio, K. Kajita, T. Morinari, N. Tajima,
   Quantum Phase Transition in Organic Massless Dirac Fermion System α-(BEDT-TTF)₂I₃ under Pressure
   J. Phys. Soc. Jpn., 89, 123702 (2020).

3. Y. Kawakami, T. Amano, H. Ohashi, H. Itoh, Y. Nakamura, H. Kishida, T. Sasaki, G. Kawaguchi, H. M. Yamamoto, K. Yamamoto, S. Ishihara, K. Yonemitsu, S. Iwai,
   Petahertz non-linear current in a centrosymmetric organic superconductor
   Nature Commun., 11, 4138 (2020).

4. Y. Nabei, D. Hirobe, Y. Shimamoto, K. Shiota, A. Inui, Y. Kousaka, Y. Togawa, H. M. Yamamoto,
   Current-induced bulk magnetization of a chiral crystal CrNb₃S₆
   Appl. Phys. Lett., 117, 052408 (2020).

5. A. Inui, R. Aoki, Y. Nishiue, K. Shiota, Y. Kousaka, H. Shishido, D. Hirobe, M. Suda, J. Ohe, J. Kishine, H. M. Yamamoto, Y. Togawa,
   Chirality-Induced Spin-Polarized State of a Chiral Crystal CrNb₃S₆
   Phys. Rev. Lett., 124, 166602 (2020).

 

2019

1. G. Kawaguchi, H. M. Yamamoto,
   Control of Organic Superconducting Field-Effect Transistor by Cooling Rate
   Crystals, 9(11), 605 (2019)

2. Y. Kawasugi, K. Seki, J. Pu, T. Takenobu, S. Yunoki, H. M. Yamamoto, R. Kato,
   Non-Fermi-liquid behavior and doping asymmetry in an organic Mott insulator interface
   Phys. Rev. B, 100, 115141 (2019).

3. M. Suda, Y. Thathong, V. Promarak, H. Kojima, M. Nakamura, T. Shiraogawa, M. Ehara, H. M. Yamamoto,
   Light-driven molecular switch for reconfigurable spin filters
   Nature Commun., 10, 2455 (2019). 

4. Y. Kawasugi, K. Seki, S. Tajima, J. Pu, T. Takenobu, S. Yunoki, H. M. Yamamoto, R. Kato,
   Two-dimensional ground-state mapping of aMott-Hubbard system in a flexible field-effect device
   Sci. Adv., 5, eaav7282 (2019).

5. G. Kawaguchi, A. A. Bardin, M. Suda, M. Uruichi, H. M. Yamamoto,
   An Ambipolar Superconducting Field-Effect Transistor Operating above Liquid Helium Temperature
   Adv. Mater., 31, 1805715 (2019).

2018

1. T. Chooppawa, M. Suda, M. Uruichi, M. Kunaseth, S. Namuangruk, P. Rashatasakhon, H. M. Yamamoto, 
   Development of highly soluble perylenetetracarboxylic diimide derivative for n-type monolayer field-effect-transistor
   Mol. Cryst. Liq. Cryst. 669, 94-105 (2018).

2. Y. Kawakami, T. Amano, Y. Yoneyama, Y. Akamine, H. Itoh, G. Kawaguchi, H. M. Yamamoto, H. Kishida, K. Itoh, T. Sasaki, S. Ishihara, Y. Tanaka, K. Yonemitsu, S. Iwai,
   Nonlinear charge oscillation driven by a single-cycle light field in an organic superconductor
   Nature Photonics, 12, 474-478 (2018).  

3. H. Oike, M. Suda, M. Kamitani, A. Ueda, H. Mori, Y. Tokura, H. M. Yamamoto, and F. Kagawa, 
   Size effects on supercooling phenomena in strongly correlated electron systems: IrTe2 and θ−(BEDT−TTF)2RbZn(SCN)4
   Phys. Rev. B, 97, 085102 (2018).  

4. H. M. Yamamoto, M. Suda, Y. Kawasugi, 
   Organic phase-transition transistor with strongly correlated electrons
   Jpn. J. Appl. Phys., 57, 03EA02 (2018).  

2017

1. M. Suda, H. M. Yamamoto, 
   Field-, strain- and light-induced superconductivity in organic strongly correlated electron systems
   PCCP, 20, 1321 (2017).  

2. E. Tisserond, J. N. Fuchs, M. O. Goerbig, P. Auban-Senzier, C. Meziere, P. Batail, Y. Kawasugi, M. Suda, H. M. Yamamoto, R. Kato, N. Tajima and M. Monteverde, 
   Aperiodic quantum oscillations of particle-hole asymmetric Dirac cones
   Euro. Phys. Lett., 119, 67001 (2017).  

3. H. Yamakawa, T. Miyamoto, T. Morimoto, T. Tanishige, H. Yada, N. Kida, M. Suda, H. M. Yamamoto, R. Kato, K. Miyagawa, K. Kanoda and H. Okamoto, 
   Mott Transition by an Impulsive dielectric Breakdown
   Nature Mater., 16, 1100-1105 (2017).  

4. F. Yang, M. Suda and H. M. Yamamoto, 
   Fabrication and Operation of Monolayer Mott FET at Room Temperature
   Bull. Chem. Soc. Jpn., 90(11), 1259-1266 (2017). (Selected for BCSJ Award Article) 

5. M. Suda, N. Takashina, S. Namuangruk, N. Kungwan, H. Sakurai and H. M. Yamamoto, 
   N-type Superconductivity in an organic Mott insulator induced by light-driven electron-doping
   Adv. Mater., 29, 1606833 (2017). 

6. Yoshiaki Sato, Yoshitaka Kawasugi, Masayuki Suda, Hiroshi M. Yamamoto, and Reizo Kato , 
   Critical Behavior in Doping-Driven Metal–Insulator Transition on Single-Crystalline Organic Mott-FET
   Nano Lett., 17, 708 (2017). 

2016

1. Yoshitaka Kawasugi, Kazuhiro Seki, Yusuke Edagawa, Yoshiaki Sato, Jiang Pu, Taishi Takenobu, Seiji Yunoki, Hiroshi M. Yamamoto and Reizo Kato, 
   Simultaneous enhancement of conductivity and Seebeck coefficient in an organic Mott transistor
   Appl. Phys. Lett. 109, 233301 (2016) 

2. Yoshitaka Kawasugi, Kazuhiro Seki, Yusuke Edagawa, Yoshiaki Sato, Jiang Pu, Taishi Takenobu, Seiji Yunoki, Hiroshi M. Yamamoto, and Reizo Kato, 
   Electron–hole doping asymmetry of Fermi surface reconstructed in a simple Mott insulator
   Nature Commun., 7, 12356 (2016)   

3. Syuma Yasuzuka, Shinya Uji, Takako Konoike, Taichi Terashima, David Graf, Eun Sang Choi, James S. Brooks, Hiroshi M. Yamamoto, and Reizo Kato, 
   Shubnikov–de Haas Effect and Angular-Dependent Magnetoresistance in Layered Organic Conductor β′′-(ET)(TCNQ)
   J. Phys. Soc. Jpn., 85, 084701 (2016)   

4. H. Yamakawa, T. Miyamoto, T. Morimoto, H. Yada, Y. Kinoshita, M. Sotome, N. Kida, K. Yamamoto, K. Iwano, Y. Matsumoto, S. Watanabe, Y. Shimoi, M. Suda, H. M. Yamamoto, H. Mori and H. Okamoto, 
   Novel electronic ferroelectricity in an organic charge-order insulator investigated with terahertz-pump optical-probe spectroscopy
   Scientific Reports, 6, 20571 (2016)  

2015

1. J. Mannhart, H. Hilgenkamp, and H.M. Yamamoto,  
   Three-Terminal Devices
   Reference Module in Materials Science and Materials Engineering (2015)  

2. Z. Qiu, M. Uruichi, D. Hou, K. Uchida, H. M. Yamamoto and E. Saitoh,  
   Spin-current injection and detection in κ-(BEDT-TTF)₂Cu[N(CN)₂]Br
   AIP Advances, 5, 057167 (2015)  

3. M. Suda, R. Kato, and H. M. Yamamoto,  
   Light-induced superconductivity using a photo-active electric double layer
   Science, 347, 743–746 (2015)   

2014

1. C. Lemouchi, H. M. Yamamoto, R. Kato, S. Simonov, L. Zorina, A. Rodriguez-Fortea, E. Canadell, P. Wzietek, K. Iliopoulos, D. Gindre, M. Chrysos, and P. Batail,  
   Reversible Control of Crystalline Rotors by Squeezing Their Hydrogen Bond Cloud Across a Halogen Bond-Mediated Phase Transition
   Crystal Growth & Design, 14, 3375–3383 (2014)  

2. H. M. Yamamoto, Y. Kawasugi, H. Cui, M. Nakano, Y. Iwasa, and R. Kato,  
   Asymmetric Phase Transitions Observed at the Interface of a Field-Effect Transistor Based on an Organic Mott Insulator
   Euro. J. Inorg. Chem., 2014, 3841–3844 (2014)   

3. M. Suda, Y. Kawasugi, T. Minari, K. Tsukagoshi, R. Kato, and H. M. Yamamoto,  
   Strain-Tunable Superconducting Field-Effect Transistor with an Organic Strongly-Correlated Electron System
   Adv. Mater., 26, 3490–3495 (2014)   

4. Hiroshi M. Yamamoto 
   Sheathed nanowires aligned by crystallographic periodicity: a possibility of cross-bar wiring in three-dimensional space
   CrystEngComm. 16, 2857 - 2868 (2014)    

2013

1. Tetsuro Kusamoto, Hiroshi M. Yamamoto and Reizo Kato 
   Utilization of σ-Holes on Sulfur and Halogen Atoms for Supramolecular Cation···Anion Interactions in Bilayer Ni(dmit)₂ Anion Radical Salts
   Cryst. Growth Des., 13, 4533–4541 (2013)    

2. H. M. Yamamoto, M. Nakano, M. Suda, Y. Iwasa, M. Kawasaki and R. Kato 
   A strained organic field-effect transistor with a gate-tunable superconducting channel
   Nature Commun. 4, 2379/1–2379/7 (2013)    

3. N. Tajima, T. Yamauchi, T. Yamaguchi, M. Suda, Y. Kawasugi, H. M. Yamamoto, R. Kato, Y. Nishio and K. Kajita 
   Quantum Hall effect in multilayered massless Dirac fermion systems with tilted cones
   Phys. Rev. B, 88, 075315/1-6 (2013)    

4. H. M. Yamamoto, J. Ueno and Reizo Kato 
   Critical behavior of a filling-controlled Mott-transition observed at an organic field-effect-transistor interface
   Eur. Phys. J. Special Topics 222, 1057–1063 (2013)  (INVITED)  

5. N. Takubo, N. Tajima, H. M. Yamamoto, H. Cui, and R. Kato 
   Lattice Distortion Stabilizes the Photoinduced Metallic Phase in the Charge-Ordered Organic Salts (BEDT-TTF)₃X₂ (X=ReO₄, ClO₄)
   Phys. Rev. Lett. 110, 227401 (2013)

6. T. Kusamoto, H. M. Yamamoto, N. Tajima, Y. Oshima, S. Yamashita, and R. Kato
   Bilayer Mott System with Cation···Anion Supramolecular Interactions Based on a Nickel Dithiolene Anion Radical: Coexistence of Ferro- and Antiferromagnetic Anion Layers and Large Negative Magnetoresistance
   Inorg. Chem., 52(9), 4759-4761 (2013). 

7. Y. Kosaka, H. M. Yamamoto, A. Tajima, A. Nakao, H. Cui and R. Kato
   Supramolecular Ni(dmit)₂ salts with halopyridinium cations -development of multifunctional molecular conductors with the use of competing supramolecular interactions
   CrystEngComm, 15(16), 3200-3211 (2013). (INVITED)  

8. N. Takubo, N. Tajima, H. M. Yamamoto, and R. Kato
   Observation of Photo-Induced Insulator-to-Metal Transition in Charge-Ordered α-(BEDT-TTF)₂I₃ Thin Crystal by Simultaneous Transport and Optical Measurement
   J. Luminescence, 137, 237-240 (2013).　 

2012

1. T. Kusamoto, H. M. Yamamoto, N. Tajima, Y. Oshima, S. Yamashita, and R. Kato
   Bilayer Mott System Based on Ni(dmit)₂ (dmit = 1,3-dithiole-2-thione-4,5-dithiolate) Anion Radicals: Two Isostructural Salts Exhibit contrasting Magnetic Behavior
   Inorg. Chem., 51(21), 11645-11654 (2012).

2. D. Watanabe, M. Yamashita, S. Tonegawa, Y. Oshima, H. M. Yamamoto, R. Kato, I. Sheikin, K. Behnia, T. Terashima, S. Uji, T. Shibauchi, and Y. Matsuda
   Novel Pauli-Paramagnetic Quantum Phase in a Mott Insulator
   Nature Commun., 3, 1090/1-1090/6 (2012). 

3. T. Kiss, A. Chainani, H. M. Yamamoto, T. Miyazaki, T. Akimoto, T. Shimojima, K. Ishizaka, S. Watanabe, C.-T. Chen, A. Fukaya, R. Kato, and S. Shin
   Quasiparticles and Fermi Liquid Behaviour in an Organic Metal
   Nature Commun., 3, 1089/1-1089/6 (2012).  

2011

1. J. Lieffrig, H. M. Yamamoto, T. Kusamoto, H. Cui, O. Jeannin, M. Fourmigue, and R. Kato
   Halogen-Bonded, Eight-fold PtS-Type Interpenetrated Supramolecular Network. A Study toward Redundant and Cross-Bar Supramolecular Nanowire Crystal
   Cryst. Growth Des., 11(10), 4267-4271 (2011). (INVITED)  

2. J. A. Wright, E. Green, P. Kuhns, A. Reyes, J. Brooks, J. Schlueter, R. Kato, H. Yamamoto, M. Kobayashi, and S. E. Brown
   Zeeman-Driven Phase Transition within the Superconducting State of κ-(BEDT-TTF)₂Cu(NCS)₂
   Phys. Rev. Lett., 107, 087002/1-087002/4 (2011).

3. Y. Kawasugi, H. M. Yamamoto, N. Tajima, T. Fukunaga, K. Tsukagoshi, and R. Kato
   Electric-Field-Induced Mott Transition in an Organic Molecular Crystal
   Phys. Rev. B, 84, 125129/1-125129/9 (2011).    PRB Editors' Suggestions

4. Y. Takahide, M. Kimata, K. Kodama, T. Terashima, S. Uji, M. Kobayashi, and H. M. Yamamoto
   Highly nonlinear current-voltage characteristics of the organic Mott insulator κ-(BEDT-TTF)₂Cu[N(CN)₂Cl
   Phys. Rev. B, 84, 035129/1-035129/7 (2011).

5. K. Hazama, S. Uji, Y. Takahide, M. Kimata, H. Satsukawa, A. Harada, T. Terashima, Y. Kosaka, H. M. Yamamoto, and R. Kato
   Fermi Surface and Interlayer Transport in the Two-Dimensional Magnetic Organic Conductor (Me-3,5-DIP)[Ni(dmit)2]2
   Phys. Rev. B, 83, 165129/1-165129/9 (2011).

2010

1. Y. Takano, K. Hiraki, Y. Takada, H. M. Yamamoto, and T. Takahashi
   Local Spin Susceptibility Characteristic of Zero-Gap State of α-(BEDT-TTF)2I3 under Pressure
   J. Phys. Soc. Jpn., 79, 104704/1-104704/7 (2010).  

2. K. Hazama, Y. Takahide, M. Kimata, T. Terashima, S. Uji, Y. Kosaka, H. M. Yamamoto, and R. Kato
   Electronic State of Magnetic Organic Conductor (Me-3,5-DIP)[Ni(dmit)2]2
   J. Phys.: Conf. Ser., 150, 022025/1-022025/4 (2010).

3. Y. Takahide, M. Kimata, K. Hazama, T. Terashima, S. Uji, T. Konoike, and H. M. Yamamoto
   Charge Transport in Charge-Ordered Layered Crystals θ-(BEDT-TTF)2MZn(SCN)4 (M=Cs, Rb): Effects of Long-Range Coulomb Interaction and Pauli Exclusion Principle
   Phys. Rev. B, 81, 235110/1-235110/18 (2010).

4. Y. Ishii, M. Nagasawa, T. Suzuki, I. Watanabe, T. Matsuzaki, H. M. Yamamoto, and R. Kato
   Zero Field- and Longitudinal Field-μSR Studies of Quasi-One-Dimensional Organic Conductor, TMTTF2PF6
   Physica B, 405(11), S98-S100 (2010).

5. T. Yamamoto, Y. Nakazawa, R. Kato, K. Yakushi, H. Akutsu, A. S. Akustu, H. Yamamoto, A. Kawamoto, S. S. Turner, and P. Day
   Charge Fluctuation of the Superconducting Molecular Crystals
   Physica B, 405(11), S237-S239 (2010).

6. M. Yamashita, N. Nakata, Y. Senshu, M. Nagata, H. M. Yamamoto, R. Kato, T. Shibauchi, and Y. Matsuda
   Highly Mobile Gapless Excitations in a Two-Dimensional Candidate Quantum Spin Liquid
   Science, 328(5983), 1246-1248 (2010).

2009

1. Y. Kawasugi, H. M. Yamamoto, N. Tajima, T. Fukunaga, K. Tsukagoshi, and R. Kato
   Field-Induced Carrier Delocalization in the Strain-Induced Mott Insulating State of an Organic Superconductor
   Phys. Rev. Lett., 103(11), 116801/1-116801/4 (2009).   PRL Editors' Suggestions

2. T. Itou, A. Oyamada, S. Maegawa, K. Kubo, H. M. Yamamoto, and R. Kato
   Superconductivity on the Border of a Spin-Gapped Mott Insulator: NMR Studies of the Quasi-Two-Dimensional Organic System EtMe3P[Pd(dmit)2]2
   Phys. Rev. B, 79(17), 174517/1-174517/6 (2009).   PRB Editors' Suggestions

3. H. M. Yamamoto, M. Hosoda, Y. Kawasugi, K. Tsukagoshi, and R. Kato
   Field Effect on Organic Charge-Ordered/Mott Insulators
   Physica B:Condensed Matter, 404(3-4), 413-415 (2009).

4. F. Nad, P. Monceau, and H. M. Yamamoto
   Charge-Ordered State and its Stabilization in Organic Compounds
   Physica B:Condensed Matter, 404(3-4), 473-475 (2009).

2008

1. F. Nad, P. Monceau, and H. M. Yamamoto
   A Possible Glass-Like State in θ-(BEDIT-TTF)2CsZn(SCN)4 at Low Temprature
   J. Phys.: Condensed Matter, 20(48), 485211/1-485211-6 (2008).

2. Y. Kawasugi, H. M. Yamamoto, M. Hosoda, N. Tajima, T. Fukunaga, K. Tsukagoshi, and R. Kato
   Strain-Induced Superconductor/Insulator Transition and Field Effect in a Thin Single Crystal of Molecular Conductor
   Appl. Phys. Lett., 92, 243508/1-243508/3 (2008).

3. H. M. Yamamoto, Y. Kawasugi, H. Ito, T. Fukunaga, T. Suzuki, K. Tsukagoshi, and R. Kato
   Conduction Properties of Micro-Crystals of 2,5-Dimethyl-N,N'-Dicyanoquinonediimine Metal (Metal = Ag, Cu) Complexes on SiO2/Si Substrates
   Solid State Sci., 10(12),1757-1761 (2008).

4. T. Yamamoto, H. M. Yamamoto, R. Kato, M. Uruichi, K. Yakushi, H. Akutsu, A. Sato-Akutsu, A. Kawamoto, S. S. Turner, and P. Day
   Inhomogeneous Site Charges at the Boundary between the Insulating, Superconducting, and Metallic Phases of β"-Type Bis-Ethylenedithio-Tetrathiafulvalene Molecular Charge-Transfer Salts
   Phys. Rev. B, 77, 205120/1-205120/14 (2008).   PRB Editors' Suggestions

5. S. Fujiyama, A. Shitade, K. Kanoda, Y. Kosaka, H. M. Yamamoto, and R. Kato
   Suppression of Electronic Susceptibility in Metal-Mott-Insulator Alternating Material (Me-3,5-DIP)[Ni(dmit)2]2 Observed Using 13C NMR
   Phys. Rev. B, 77, 060403/1-060403/4 (2008).

6. H. M. Yamamoto, Y. Kosaka, R. Maeda, J. Yamaura, A. Nakao, T. Nakamura, and R. Kato
   Supramolecular Insulating Networks Sheathing Conducting Nanowires Based on Organic Radical Cations
   ACS Nano, 2(1), 143-155 (2008).

2007

1. F. Nad, P. Monceau, and H. M. Yamamoto
   Effect of Cooling rate on Charge Ordering in θ-(BEDT-TTF)2RbZn(SCN)4
   Phys. Rev. B, 76(20), 205101/1-205101/6 (2007).

2. T. Yamamoto, R. Kato, H. M. Yamamoto, A. Fukaya, K. Yamasawa, I. Takahashi, H. Akutsu, A. Akutsu-Sato, and P. Day
   Technique for Anisotropic Extension of Organic Crystals: Application to Temperature Dependence of Electrical Resistance
   Rev. Sci. Instrum., 78, 083906/1-083906/11 (2007).

3. T. Yamaguchi, T. Konoike, K. Enomoto, M. Nishimura, T. Terashima, S. Uji, and H. M. Yamamoto
   Large Positive Magnetoresistance of Insulating Organic Crystals in the Non-Ohmic Region
   Phys. Rev. Lett. 98, 116602/1-116602/4 (2007).

4. Y. Kosaka, H. M. Yamamoto, A. Nakao, M. Tamura, and R. Kato
   Coexistence of Conducting and Magnetic Electrons Based on Molecular π-Electrons in the Supramolecular Conductor (Me-3,5-DIP)[Ni(dmit)2]2"
   J. Am. Chem. Soc., 129(11), 3054-3055 (2007).

5. M. Kimata, Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto, and R. Kato
   Low-Temperature Fermi Surface of the Organic Conductor β''-(BEDT-TTF)(TCNQ)(1-x)(F1-TCNQ)x (x=0,0.05) from magnetooptical measurements
   Phys. Rev. B, 75(4), 045126/1-045126/9 (2007).

2006

1. F. Nad, P. Monceau, and H. M. Yamamoto
   Dielectric Response in the Charge-Ordered θ-(BEDT-TTF)2RbZn(SCN)4 Organic Compound
   J. Phys.: Condensed Matter, 18(41), L509-L514 (2006).

2. H. M. Yamamoto, H. Ito, M. Ikeda, R. Kato, K. Shigeto, and K. Tsukagoshi
   Nano-size Molecular Conductors Directly Formed on Silicon Substrates
   Multifunctional Conducting Molecular Materials, ed. by G. Saito, F. Wudl, R. C. Haddon, K. Tanigaki, T. Enoki, H. E. Katz, and M. Maesato, The Royal Society of Chemistry, Cambridge, UK, 97-100 (2007).

3. M. Ashizawa, H. M. Yamamoto, A. Nakao, and R. Kato
   The First Methyl Antimony Linked Dimeric Tetrathiafulvalene and Tetraselenafulvalenes
   Tetrahedron Letters, 47(50), 8937-8941 (2006).

4. H. M. Yamamoto, H. Ito, K. Shigeto, I. Yagi, K. Tsukagoshi, and R. Kato
   Nano-Size Molecular Conductors on Silicon Substrate -Toward Device Integration of Conductive CT Salts-
   J. Low Temperature Physics, 142(3/4), 215-220 (2006).

5. M. Ashizawa, A. Nakao, H. M. Yamamoto, and R. Kato
   Development of the First Methyl Antimony Bridged Tetrachalcogenafulvalene Systems
   J. Low Temperature Physics, 142(3/4), 449-452 (2006).

6. K. Kubo, A. Nakao, H. M. Yamamoto, and R. Kato
   Preparation and Characterization of Conducting Trimetallic Nickel-Dithiolene Complexes with Bridging Tetrathiooxalate Ligands
   J. Am. Chem. Soc., 128(38), 12358-12359 (2006).

7. Y. Kosaka, H. M. Yamamoto, A. Nakao, and R. Kato
   Multicomponent Molecular Conductors with Supramolecular Assemblies Prepared from Neutral Iodine-Bearing pBIB (p-Bis(iodoethynyl)benzene) and Derivatives
   Bull. Chem. Soc. Jpn., 79(7), 1148-1154, (2006).

8. T. Yamaguchi, T. Konoike, K. Enomoto, M. Nishimura, T. Terashima, S. Uji, and H. M. Yamamoto
   Current-Voltage Characteristics of Charge-Ordered Organic Crystals
   Phys. Rev. Lett., 96(13), 136602/1-136602/4 (2006).

9. R. Jindo, S. Sugawara, N. Tajima, H. M. Yamamoto, R. Kato, Y. Nishio, and K. Kajita
   Out-of-Plane Resistance of Quasi-two Dimensional Metal (BEDT-TTF)3Cl(DFBIB) in Transverse Magnetic Fields
   J. Phys. Soc. Jan., 75(1), 013705/1-013705/5 (2006).　　Papers of Editors' Choice

10. H. M. Yamamoto, H. Ito, K. Shigeto, K. Tsukagoshi, and R. Kato
    Direct Formation of Micro-/Nanocrystalline 2,5-dimethyl-N,N'-Dicyanoquinonediimine Complexes on SiO2/Si Substrates and Multiprobe Measurement of Conduction Properties
    J. Am. Chem. Soc., 128(3), 700-701 (2006).

11. M. Uruichi, K. Yakushi, H. M. Yamamoto, and R. Kato
    Infrared and Raman Studies of the Charge-Ordering Phase Transition at ～170 K in the Quarter-Filled Organic Conductor, β"-(ET)(TCNQ)
    J. Phys. Soc. Jpn., 75(7), 074720/1-074720/10 (2006).

12. T. Takahashi, K. Hiraki, S. Moroto, N. Tajima, Y. Takano, Y. Kubo, H. Satsukawa, R. Chiba, H. M Yamamoto, R. Kato, and T. Naito
    Charge Disproportionation, Everywhere!
    J. Phys. IV France: Proceedings (2005), 131(ECRYS-2005, International Workshop on Electronic Crystals, 2005), 3-8 (2005).

13. M. Kimata, H. Ohta, K. Koyama, Y. Oshima, M. Motokawa, H. M. Yamamoto, and R. Kato
    Development of the High Field Magneto-Optical Measurement System with a Rotational Cavity for the Study of Organic Conductors
    High Magnetic Fields in Semiconductor Physics, Proceedings of the International Conference on High Magnetic Fields in Semiconductor Physics, 16th, Tallahassee, FL, United States, Aug. 2-6, 2004, 355-358 (2005).

2005

1. T. Takahashi, S. Suzuki, K. Hiraki, H. M. Yamamoto, and R. Kato
   Electronic Properties of a New Layered Organic Conductor, (BEDT-TTF)3Br(pBIB)
   Synth. Met., 153(1-3), 401-404 (2005).

2. M. Kimata, Y. Oshima, K. Koyama, H. Ohta, M. Motokawa, H. M. Yamamoto, and R. Kato
   Fermi Surface Study of β"-(BEDT-TTF)(TCNQ) by Magnetooptical Measurements
   Synth. Met., 153(1-3), 369-372 (2005).

3. S. Yasuzuka, S. Uji, K. Enomoto, T. Konoike, M. Nishimura, T. Terashima, D. Graf, E. S. Choi, J. S. Brooks, H. M. Yamamoto, R. Kato, K. Yokogawa, and K. Keizo
   Pressure Effect on Fermi Surface in β"-(ET)(TCNQ)
   Synth. Met., 152(1-3), 437-440 (2005).

4. Y. Syuma, S. Uji, H. M. Yamamoto, J. Yamaura, C. Terakura, T. Terashima, T. Yakabe, Y. Terai, R. Maeda, and R. Kato
   Shubnikov-de Haas Effect and Angular-Dependent Magnetoresistance in New Layered Organic Conductors ET3Cl(DFBIB) and ET3Br(pBIB)
   J. Phys. Soc. Jpn., 74(2), 679-685 (2005).

2004

1. M. Kimata, H. Ohta, K. Koyama, Y. Oshima, M. Motokawa, H. M. Yamamoto, and R. Kato
   Development of the High Field Magneto-Optical Measurement System with a Rotational Cavity for the Study of Organic Conductors
   International Journal of Modern Physics B: Condensed Matter Physics, Statistical Physics, Applied Physics, 18(27, 28 & 29), 3803-3806 (2004).

2. R. Chiba, K. Hiraki, T. Takahashi, H. M. Yamamoto, and T. Nakamura
   Extremely Slow Charge Fluctuations in the Metallic State of the Two-Dimensional Molecular Conductor θ -(BEDT-TTF)2RbZn(SCN)4
   Phys. Rev. Lett., 93(21), 216405/1-216405/4 (2004).

3. H. Ohta, M. Kimata, Y. Oshima, K. Koyama, M. Motokawa, H. M. Yamamoto, R. Kato, H. Nishikawa, K. Kikuchi, and I. Ikemoto
   Magnetooptical Measurements of Low Dimensional Organic Conductors
   Tohoku Daigaku Kinzoku Zairyo Kenkyusho Kyojiba Chodendo Zairyo Kenkyu Senta Nenji Hokoku, Volume Date 2003, 129-132 (2004).

4. S. Moroto, K. I. Hiraki, Y. Takano, Y. Kubo, T. Takahashi, H. M. Yamamoto, and T. Nakamura
   Charge Disproportionation in the Metallic State of α -(BEDT-TTF)2I3
   J. Phys IV France: Proceedings, 114(ISCOM 2003, Fifth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, 2003), 339 (2004).

5. T. Takahashi, R. Chiba, K. Hiraki, H. M. Yamamoto, and T. Nakamura
   Dynamical Charge Disproportionation in Metallic State in θ -(BEDT-TTF)2RbZn(SCN)4
   J. Phys IV France: Proceedings, 114(ISCOM 2003, Fifth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, 2003), 269-272 (2004).

6. S. Yasuzuka, D. Graf, E. S. Choi, J. S. Brooks, T. Terashima, T. Konoike, K. Enomoto, M. Nishimura, H. M. Yamamoto, R. Kato, and S. Uji
   Pressure-Induced Fermi Surface Change in Quasi-one-dimensional Conductor β''-(ET)(TCNQ)
   J. Phys IV France: Proceedings, 114(ISCOM 2003, Fifth International Symposium on Crystalline Organic Metals, Superconductors and Ferromagnets, 2003), 157-158 (2004).

7. M. Kimata, Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto, and R. Kato
   Magnetooptical Measurements of β"-(BEDT-TTF)(TCNQ)
   Physica B: Condensed Matter, 346-347, 382-386 (2004).

8. K. Yakushi, M. Uruichi, H. Yamamoto, and R. Kato
   Dynamical Fluctuation of the Site-Charge Density in Metallic β"-(BEDT-TTF)(TCNQ)
   J. Phys. IV France, 114, 149-151 (2004).

2003

1. S. Uji, T. Terashima, S. Yasuzuka, J. Yamaura, H. M. Yamamoto, and R. Kato
   Fermi Surface and Angular-Dependent Magnetoresistance in the Organic Conductor (BEDT-TTF)2Br(DIA)
   Phys. Rev. B: Condensed Matter and Materials Physics, 68(6), 064420/1-064420/7 (2003).

2. K. Murata, K. Iwashita, H. M. Yamamoto, H. Yoshino, J. S. Brooks, K. Hiraki, and T. Takahashi
   Charge Disproportionation and Weak Localization in θ-(BEDT-TTF)2MZn(SCN)4 [M=Cs, Rb]
   Synth. Met., 135-136, 553-554 (2003).

3. Y. Kubo, Y. Takano, K. Hiraki, T. Takahashi, H. M. Yamamoto, and T. Nakamura
   13C-NMR Studies of the 'Narrow Gap Semiconducting' State of α-(BEDT-TTF)2I3 under Pressure
   Synth. Met., 135-136, 591-592 (2003).

4. R. Chiba, K. Hiraki, T. Takahashi, H. M. Yamamoto, and T. Nakamura
   Pressure Effect on the Charge Ordering in θ-(BEDT-TTF)2MZn(SCN)4[M=Rb, Cs]
   Synth. Met., 135-136, 595-596 (2003).　

5. S. Yasuzuka, C. Terakura, T. Terashima, T. Yakabe, Y. Terai, H. M. Yamamoto, R. Kato, and S. Uji
   Fermi Surface and Resistance Anomalies in ET-TCNQ
   Synth. Met., 135-136, 647-648 (2003).

6. H. M. Yamamoto, N. Tajima, M. Hagiwara, R. Kato, and J.-I. Yamaura
   Strange Electric/Magnetic Behaviour of New (BEDT-TTF)(TCNQ)
   Synth. Met., 135-136, 623-624 (2003).

7. Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto, R. Kato, M. Tamura, Y. Nishio, and K. Kajita
   Fermi Surface Study of Quasi-Two-Dimensional Organic Conductors by Magnetooptical Measurements
   J. Phys. Soc. Jpn., 72, 143-148 (2003).

8. Y. Oshima, H. Ohta, K. Koyama, M. Motokawa, H. M. Yamamoto, and R. Kato
   Observation of High-Order Harmonic Resonances in Magnetooptical Measurement of (BEDT-TTF)2Br(DIA)
   J. Phys. Soc. Jpn., 71, 1031-1034 (2002).

9. Y. Oshima, H. Ohta, H. M. Yamamoto, R. Kato, K. Koyama, and M. Motokawa
   Magnetooptical Measurements of BEDT-TTF Salts Containing SupraMolecular Assemblies
   Synth. Met., 133-134, 453-454 (2003).

10. Y. Kubo, Y. Takano, K. Hiraki, T. Takahashi, H. M. Yamamoto, and T. Nakamura
    The Electronic State of α-(BEDT-TTF)2I3 under Hydrostatic Pressure
    Synth. Met., 133-134, 307-308 (2003).　

11. R. Chiba, K. Hiraki, T. Takahashi, H. M. Yamamoto, and T. Nakamura
    Charge Ordering in θ-(BEDT-TTF)2MZn(SCN)4 [M = Rb, Cs]
    Synth. Met., 133-134, 305-306 (2003).　

12. S. Yasuzuka, C. Terakura, T. Terashima, T. Yakabe, Y. Terai, H. M. Yamamoto, J. Yamaura, R. Maeda, R. Kato, and S. Uji
    Fermi Surface in New Layered Organic Conductors (BEDT-TTF)3Br(pBIB) and (BEDT-TTF)3Cl(DFBIB)
    Synth. Met., 133-134, 169-171 (2003).

13. K. Iwashita, H. M. Yamamoto, H. Yoshino, D. Graf, K. Storr, I. Rutel, J. S. Brooks, T. Takahashi, and K. Murata
    Uniaxial Strain Dependence of Electronic States of θ-(BEDT-TTF)2MZn(SCN)4 [M=Cs, Rb]
    Synth. Met., 133-134, 153-155 (2003).　

14. H. M. Yamamoto, M. Hagiwara, and R. Kato
    New Phase of (BEDT-TTF)(TCNQ)
    Synth. Met., 133-134, 449-451 (2003).

2002

1. H. M. Yamamoto
   Anionic Supramolecular Assemblies in Conductive Cation Radical Salts: Iodine-Containing Molecules as Building Blocks
   RIKEN Review, 46, 3-6 (2002).

2. Y. Oshima, H. Ohta, H. M. Yamamoto, and R. Kato
   ESR Studies of BEDT-TTF Organic Conductors Containing Supramolecular Assemblies
   Proc. 3rd Asia-Pacific EPR/ESR Symposium (APES'01), 2002, 312-315.

3. R. Kato, T. Imakubo, H. Yamamoto, R. Maeda, M. Fujiwara, J.-I. Yamaura, and H. Sawa
   An Application of Supramolecular Chemistry to Molecular Conductors
   Mol. Cryst. Liq. Cryst., 380, 61-68 (2002).

2001

1. H. M. Yamamoto, R. Maeda, J. Yamaura, and R. Kato
   Structural and Physical Properties of Conducting Cation Radical Salts Containing Supramolecular Assemblies Based on p-Bis(Iodoethynyl)Benzene Derivatives
   J. Mater. Chem., 11, 1034-1041 (2001).

2. Y. Takano, K. Hiraki, H. M. Yamamoto, T. Nakamura, and T. Takahashi
   Charge Ordering in α-(BEDT-TTF)2I3
   Synth. Met., 120, 1081-1082 (2001).

3. R. Chiba, H. M. Yamamoto, K. Hiraki, T. Takahashi, and T. Nakamura
   Charge Ordering in θ-(BEDT-TTF)2RbZn(SCN)4
   Synth. Met., 120, 919 (2001).　

4. H. M. Yamamoto, R. Maeda, J. Yamaura, and R. Kato
   Multicomponent Molecular Conductors with Supramolecular Assembly : Supramolecules with Various Dimensionality
   Synth. Met., 120, 781-782 (2001).

5. R. Chiba, H. M. Yamamoto, K. Hiraki, T. Takahashi, and T. Nakamura
   Charge Disproportionation in (BEDT-TTF)2RbZn(SCN)4
   J. Phys. Chem. Solids, 62, 389-391 (2001).　

6. Y. Takano, H. M. Yamamoto, K. Hiraki, T. Nakamura, and T. Takahashi
   Charge Disproportionation in the Organic Conductor, α-(BEDT-TTF)2I3
   J. Phys. Chem. Solids, 62, 393-395 (2001).　

2000

1. H. M. Yamamoto and R. Kato
   Design, Preparation, and Characterization of Novel ET Salts with Supramolecular Assembly --Sheet and Chain Structures Based on Difluorotetraiodobenzene--
   Chem. Lett., 2000, 970-971 (2000).

1999

1. S. Uji, C. Terakura, T. Terashima, H. Aoki, H. M. Yamamoto, J. Yamaura, and R. Kato
   Fermi Surface of (BEDT-TTF)2Br(DIA)
   Synth. Met., 103, 1978-1978 (1999).

2. H. M. Yamamoto, J. Yamaura, and R. Kato
   Physical Properties of Multi-Component Molecular Conductors with Supramolecular Assembly
   Synth. Met., 102, 1515-1516 (1999).

3. H. M. Yamamoto, J. Yamaura, and R. Kato
   Preparation of Multi-Component Molecular Conductors with Supramolecular Assembly
   Synth. Met., 102, 1448-1451 (1999).

1998

1. H. M. Yamamoto, J. Yamaura, and R. Kato
   Multicomponent Molecular Conductors with Supramolecular Assembly: Iondine-Containing Neutral Molecules as Building Blocks
   J. Am. Chem. Soc., 120(24), 5905-5913 (1998).

2. H. M. Yamamoto, J. Yamaura, and R. Kato
   Structural and Electrical Properties of (BEDT-TTF)2X(diiodoacetylene) (X=Cl, Br): The Novel Self-Assemby of Neutral Lewis-acidic Molecules and Halide Anions in a Molecular Metal
   J. Mater. Chem., 8(1), 15-16 (1998).

3. H. M. Yamamoto, J. Yamaura, and R. Kato
   Azulene-Substituted TTF Derivatives
   J. Mater. Chem., 8(2), 289-294 (1998).

1996

1. H. M. Yamamoto, H. Sakurai, and K. Narasaka
   One-Pot Synthesis of Unsymmetrical Ketones by the Reaction of Decacarbonyldimanganese with Two Kinds of Alkyllithiums
   Bull. Chem. Soc. Jpn., 69, 157 (1996).