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岡本清美 研究業績一覧 (133件)
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論文
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T. Sakai,
K. Okamoto.
Field-Induced Incommensurate Order in Frustrated Spin Ladder,
J. Phys.: Cond. Matter,
Vol. 19,
No. 14,
pp. 145231-1-5,
2007.
-
T. Tonegawa,
K. Okamoto,
K. Okunishi,
T. Sakai.
Finite-Field Ground State of an S=1 Zigzag Ladder,
J. Mag. Mag. Mat.,
Vol. 310,
No. 2, Part 2,
pp. e372-e374,
2007.
-
T. Sakai,
K. Okunishi,
K. Okamoto,
M. Sato,
M. Matsumoto,
Y. Otsuka.
Quantum Phase Transition in the Three-Leg Spin Nanotube,
J. Mag. Mag. Mat.,
Vol. 31,
No. 2, Part 2,
pp. e423-e425,
2007.
-
K. Okamoto,
A. Tokuno,
T. Sakai.
Interplay between the Trimerization and Frustration in Spin-1/2 Distorted Diamond Type Spin Chain with the XXZ Anisotropy,
J. Mag. Mag. Mat.,
Vol. 310,
No. 2, Part 2,
pp. e457-e459,
2007.
-
T. Tonegawa,
T. Sakai,
K. Okamoto,
M. Kaburagi.
1/3 magnetization plateau in a one-dimensional anisotropic ferrimagnet,
J. Phys.: Conf. Ser.,
Vol. 51,
pp. 171-174,
2006.
-
T. Sakai,
T. Tonegawa,
K. Okamoto.
Quantum Magnetization Plateau of an Anisotropic Mixed Spin Chain,
J. Phys.: Conf. Ser.,
Vol. 51,
pp. 163-166,
2006.
-
H. Kikuchi,
Y. Fujii,
M. Chiba,
S. Mitsudo,
T. Idehara,
T. Tonegawa,
K. Okamoto,
T. Sakai,
T. Kuwai,
H. Ohta.
Kikuchi et al. Reply,
Phys. Rev. Lett.,
Vol. 97,
pp. 089702,
2006.
-
T. Sakai,
K. Okamoto,
K. Okunishi,
T. Tonegawa.
Field-Induced Incommensurate Order in Quai-1D S=1 Antiferromagnet,
LT24 proceedings (AIP Conference Proceedings series 850),
pp. 1065-1066,
2006.
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N. Maeshima,
K. Okunishi,
K. Okamoto,
T. Sakai,
K. Yonemitsu.
Possibility of field-induced incommensurate order in quasi-one-dimensional frustrated spin system,
J. Phys.: Condensed Matter,
Vol. 18,
No. 20,
pp. 4819-4826,
2006.
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M. Matsumoto,
T. Yamada,
K. Koga,
K. Okamoto,
T. Sakai.
Theory of Excitation Modes in Diamond Chain Compound Cu3(CO3)2(OH)2,
Physica B,
Vol. 378-380,
pp. 1037,
2006.
-
Munehisa Kikuchi,
Kiyomi Okamoto,
Kouichi Okunishi,
Toru Sakai.
Magnetization Plateau of S=1 Spin Ladder BIP-TENO,
Prog. Theor. Phys. Suppl,
No. 159,
pp. 251-255,
2005.
-
Akiyuki Tokuno,
Kiyomi Okamoto,
Takashi Tonegawa.
Half plateau phase diagram in generalized zig-zag spin ladder,
Prog. Theor. Phys. Suppl.,
No. 159,
pp. 265-270,
2005.
-
Toru Sakai,
Kiyomi Okamoto.
Field-Induced Incommensurate Order in Spin Ladder with Ring Exchange,
J. Phys. Chem. Solids,
Vol. 66,
No. 8-9,
pp. 1450-1453,
2005.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Makoto Kaburagi.
Finite-Field Ground State of the S=1 Antiferromagnetic-Ferromagnetic Bond-Alternating Chain,
J. Phys. Soc. Jpn.,
Vol. 74,
No. Suppl,
pp. 161-164,
2005.
-
Akiyuki Tokuno,
Kiyomi Okamoto.
Inversion phenomena and phase diagram of the S =1/2 distorted diamond chain with the XXZ interaction anisotropy,
J. Phys. Soc. Jpn.,
Vol. 74,
No. Suppl,
pp. 157-160,
2005.
-
Nobuya Maeshima,
Kouichi Okunishi,
Kiyomi Okamoto,
Toru Sakai,
Kenji Yonemitsu.
Field-induced phase transitions and long-range orders in the S=1/2 spin bond-alternating chain with frustrating interaction,
J. Phys. Soc. Jpn.,
Vol. 74,
No. Suppl,
pp. 63-66,
2005.
-
H. Kikuchi,
Y. Fujii,
M. Chiba,
S. Mitsudo,
T. Idehara,
T. Tonegawa,
K. Okamoto,
T. Sakai,
T. Kuwai,
H. Ohta.
Experimental Observation of the 1/3 Magnetization Plateau in a Diamond Chain Compound Cu3(CO3)2(OH)2,
Phys. Rev. Lett.,
Vol. 94,
No. 22,
pp. 227201-1-4,
2005.
-
Kiyomi Okamoto,
Kouichi Okunishi,
Toru Sakai.
Magnetization Plateaux of an S=1 Frustrated Spin Ladder,
J. Phys. Soc. Jpn.,
Vol. 74,
No. Suppl,
pp. 165-168,
2005.
-
Munehisa Kikuchi,
Kiyomi Okamoto,
Kouichi Okunishi,
Toru Sakai.
Bond-Alternating S = 1 Spin Ladder in Magnetic Field,
J. Phys. Soc. Jpn.,
Vol. 74,
No. Suppl,
pp. 169-172.,
2005.
-
Kiyomi Okamoto,
Akiyuki Tokunou,
Yutaka Ichikawa.
Ground-state phase diagram of the distorted diamond type S=1/2 quantum spin chain with the XXZ anisotropy,
J. Phys. Chem. Solids,
Vol. 66,
No. 8-9,
pp. 1442-1445,
2005.
-
Toru Sakai,
Munehisa Matsumoto,
Kouichi Okunishi,
Kiyomi Okamoto,
Masahiro Sato.
Energy Gap of Spin Nanotube,
Physica E,
Vol. 29,
No. 3-4,
pp. 633-636,
2005.
-
Hikomitsu Kikuchi,
Yutaka Fujii,
Meiro Chiba,
Seitaro Mitsudo,
Toshitaka Idehara,
Takashi Tonegawa,
Kiyomi Okamoto,
Toru Sakai,
Tomohiko Kuwai,
Koichi Kindo,
Akira Matsuo,
Wataru Higemoto,
Kusuo Nishiyama,
Mladen Horovic,
Claude Bertheir.
Magnetic Properties of the Diamond Chain Compound Cu3(CO3)2(OH)2,
Prog. Theor. Phys. Suppl.,
No. 159,
pp. 1-10,
2005.
-
Kiyomi Okamoto,
Takashi Tonegawa,
Tsutoshi Yamada,
Masashige Matsumoto,
Mikito Koga,
Toru Sakai.
Ground-State Phase Diagram of the S=1/2 Distorted Diamond Type Spin Chain with Ferromagnetic Interactions,
Prog. Theor. Phys. Suppl,
No. 159,
pp. 17-21,
2005.
-
Nobuya Maeshima,
Kouichi Okunishi,
Kiyomi Okamoto,
Toru Sakai .
Frustration-Induced eta Inversion in the S=1/2 Bond-Alternating Spin Chain ,
Phys. Rev. Lett.,
Vol. 93,
No. 12,
pp. 127203-1-4,
2004.
-
T. Sakai,
K. Okamoto,
K. Okunishi,
K. Kindo,
Y. Narumi,
Y. Hosokoshi,
K. Kato,
K. Inoue,
T. Goto .
Magnetization Plateau and Cusp in S=1 Spin Ladder,
Physica B,
Vol. 346-347,
pp. 34-37,
2004.
-
T. Tonegawa,
K. Okamoto,
K. Okunishi,
K. Nomura,
M. Kaburagi:.
Magnetization Plateau in an Anisotropic S=1/2 Antiferromagnetic Chain with Frustration and Bond-Alternation ,
Physica B ,
Vol. 346-347,
pp. 50-54,
2004.
-
T. Sakai,
K. Okamoto,
K. Okunishi,
M. Sato.
Anomalous Magnetization Process in Frustrated Spin Ladders ,
J. Phys.: Cond. Matter ,
Vol. 16,
No. 11,
pp. S785-S789,
2004.
-
T. Sakai,
N. Maeshima,
K. Okunishi,
K. Okamoto.
Field-induced spin liquids, orders, and gaps in frustrated bond-alternating quantum spin chain,
Bull. Am. Phys. Soc.,
Vol. 49,
No. 1-part 1,
pp. 491,
2004.
-
Nobuya Maeshima,
Kouichi Okunishi,
Kiyomi Okamoto,
Toru Sakai.
Magnetization process of the frustrated bond-alternating chain,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 3,
pp. 17,
2004.
-
Toru Sakai,
Kiyomi Okamoto,
Kouichi Okunishi,
Masahiro Sato.
S=1 Spin Ladder in Magnetic Field,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 3,
pp. 16,
2004.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Makoto Kaburagi.
Finite-Field Ground State of the S=1 Antiferromagnetic-Ferromagnetic Bond-Alternating Chain,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 3,
pp. 14,
2004.
-
T. Sakai,
K. Okamoto,
K. Okunishi,
M. Sato.
Anomalous magnetization process in frustrated spin ladders ,
J. Phys.: Cond. Matter,
Vol. 16,
No. 11,
pp. S785-S789,
2004.
-
KIYOMI OKAMOTO.
Phase diagram of the S=1/2 two-leg spin ladder with staggered bond alternation,
Phys. Rev. B,
Vol. 67,
No. 21,
pp. 212408,
2003.
-
Kiyomi Okamoto,
Takashi Tonegawa,
Makoto Kaburagi.
Magnetic Properties of S=1/2 Distorted Diamond Chain,
J. Phys.: Condesed Matter,
Vol. 15,
No. 35,
pp. 5979-5985,
2003.
-
Kiyomi Okamoto,
Toru Sakai.
Spin-Peierls Mechanism for the Non-Trivial Magnetization Plateaux in Two-Leg Spin Ladders,
Physica B,
Vol. 329-333,
No. II,
pp. 1207-1208,
2003.
-
Toru Sakai,
Nobuhisa Okazaki,
Kiyomi Okamoto,
Koichi Kindo,
Yasuo Narumi,
Yuko Hosokoshi,
Keiichi Katoh,
Katsuya Inoue,
Tsuneaki Goto .
Magnetization Plateaux in S=1 Organic Spin Ladder BIP-TENO,
Physica B,
Vol. 329-333,
No. II,
pp. 1203-1204,
2003.
-
T. Sakai,
K. Okamoto,
N. Okazaki,
K. Kindo,
Y. Narumi,
Y. Hosokoshi,
K. Katoh,
K. Inoue,
T. Goto.
Magnetization plateau in S=1 spin ladder,
Bull. Am. Phys. Soc.,
Vol. 48,
No. 1-part II,
pp. 1265,
2003.
-
T. Sakai,
N. Okazaki,
K. Okamoto,
K. Kindo,
Y. Narumi,
Y. Hosokoshi,
K. Kato,
K. Inoue,
T. Goto.
Magnetization Plateau in S=1 Spin Ladder,
Phys. Stat. Sol. (b),
Vol. 236,
No. 2,
pp. 429-432,
2003.
-
Kiyomi Okamoto,
Takashi Tonegawa,
Makoto Kaburagi.
Distorted Diamond Chain Spin Model and the Magnetic Properties of the Azurite,
Booklet of 3rd International Symposium on New Developments in Strongly Correlated Electron Phase under Multiple Environment,
pp. 37,
2003.
-
KIYOMI OKAMOTO.
Inversion Phenomena of the Anisotropies of the Hamiltonian and the Wave Function in Quantum Spin Chains,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 2,
pp. 27,
2003.
-
KIYOMI OKAMOTO.
Anisotropies of the Hamiltonian and the Wave Function --- Inversion Phenonema in Quantum Spin Chains,
Prog. Theor. Phys. Suppl.,
No. 145,
pp. 208-211,
2002.
-
KIYOMI OKAMOTO.
Level Spectroscopy: Physical Meaning and Application to Magnetization Plateaux,
Prog. Theor. Phys. Suppl.,
No. 145,
pp. 113-118,
2002.
-
Kiyomi Okamoto,
Yutaka Ichikawa.
Inversion Phenomena of the Anisotropies of the Hamiltonian and the Wave-Function in the Distorted Diamond Type Spin Chain,
J. Phys. Chem. Solids,
Vol. 63,
No. 6-8,
pp. 1575-1578,
2002.
-
Nobuhisa Okazaki,
Kiyomi Okamoto,
Toru Sakai.
Magnetization Plateau in the S=1 Spin Ladder with Competing Interactions,
J. Phys. Chem. Solids,
Vol. 63,
No. 6-8,
pp. 1455-1458,
2002.
-
K. Okamoto,
T. Tonegawa,
T. Hikihara,
M. Kaburagi.
Ground state and magnetization plateaux of the bond-alternating zig-zag ladder Cu2Cl4・ H8C4SO2,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 1,
pp. 28,
2002.
-
K. Kindo,
Y. Narumi,
Y. Hosokoshi,
K. Kato,
K. Inoue,
T. Sakai,
N. Okazaki,
K. Okamoto,
H. Tanaka,
H. Kageyama,
Y. Ueda.
Magnetization Process up to 70T in Quantum Spin Systems,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 1,
pp. 13,
2002.
-
T. Sakai,
N. Okazaki,
K. Okamoto,
K. Kindo,
Y. Narumi,
Y. Hosokoshi,
K. Kato,
K. Inoue.
Magnetization Plateau in S=1 Spin Ladder,
News Letter: Field-Induced New Quantum Phenomena in Magnetic Systems,
No. 1,
pp. 11,
2002.
-
T. Sakai,
K. Okamoto.
Quantum Magnetization plateaux of an anisotropic ferrimagnetic spin chain,
Phys. Rev. B,
Vol. 65,
No. 21,
pp. 214403-214408,
2002.
-
KIYOMI OKAMOTO.
Mechanisms for Non-Trivial Magnetization Plateaux of an S=1 Frustrated Spin Ladder,
J. Phys. Soc. Jpn.,
Vol. 72,
No. Suppl.,
pp. 196-198,
2002.
-
野村清英,
岡本清美.
BKT転移とレベルスペクトロスコピー,
日本物理学会誌,
Vol. 56,
No. 11,
pp. 836-844,
2001.
-
岡本清美,
岡崎暢寿,
坂井徹.
BIP-TENO の非自明磁化プラトーの機構の理論,
有機分子機能体の設計・合成・物性: 講演集(分子科学研究所),
pp. 65,
2001.
-
岡崎暢寿,
岡本清美,
坂井徹 .
フラストレートしたスピンラダーの磁化過程 ,
有機分子機能体の設計・合成・物性: 講演集(分子科学研究所) ,
pp. 64,
2001.
-
Atsushi Nakasu,
Keisuke Totsuka,
Yasumasa Hasegawa,
Kiyomi Okamoto,
Toru Sakai.
Field-Induced Gap due to Four-Spin Exchange in a Spin Ladder,
J. Phys.: Condens. Matter,
Vol. 13,
No. 33,
pp. 7421-7428,
2001.
-
KIYOMI OKAMOTO.
Magnetization Process of S=1/2 XXZ Chain in a Periodic Magnetic Field ,
J. Phys. Soc. Jpn.,
Vol. 70,
No. 7,
pp. 2230-2231,
2001.
-
Kiyomi Okamoto,
Nobuhisa Okazaki,
Toru Sakai.
Magnetization Plateau of an S=1 Frustrated Spin Ladder,
J. Phys. Soc. Jpn.,
Vol. 70,
No. 3,
pp. 636-639,
2001.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Makoto Kaburagi .
Finite-Field Ground State of an Antiferromagnetic Spin-1/2 Chain with Competing Interactions ,
Physica B,
Vol. 294 & 295,
pp. 39-42,
2001.
-
Kiyomi Okamoto,
Atsuhiro Kitazawa .
Magnetization Plateau of an S=3/2 Spin Chain with on-site Anisotropy ,
J. Phys. Chem. Solids,
Vol. 62,
No. 1-2,
pp. 365-368,
2001.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Toshiya Hikihara,
Yutaka Takahashi,
Makoto Kaburagi.
Ground state of an S=1/2 distorted diamond chain in a finite magnetic field,
J. Phys. Chem. Solids,
Vol. 62,
No. 1-2,
pp. 125-128,
2001.
-
岡本清美,
市川豊.
歪んだダイヤモンド型XXZスピン鎖の基底状態,
物性研究,
Vol. 75,
No. 1,
pp. 151-154,
2000.
-
岡崎暢寿,
坂井徹,
岡本清美.
フラストレートしたスピンラダーでの磁場誘起スピンギャップ,
物性研究,
Vol. 75,
No. 1,
pp. 91-94,
2000.
-
利根川孝,
岡本清美,
鏑木誠.
歪んだダイヤモンド型 S=1/2 スピン鎖の基底状態相図,
SENAC(東北大学大型計算機センター広報),
Vol. 33,
No. 3,
pp. 19-23,
2000.
-
利根川孝,
岡本清美,
引原俊哉,
高橋裕,
鏑木誠.
歪んだダイヤモンド型S=1/2スピン鎖の基底状態 --- 有限磁場効果 ---,
物性研だより,
Vol. 69,
No. 1,
pp. 161-162,
2000.
-
北澤充弘,
岡本清美.
一軸異方性のあるS=3/2スピン鎖における磁化プラトー状態,
物性研だより,
Vol. 39,
No. 1,
pp. 108-109,
2000.
-
岡本清美,
北澤充弘.
S=1/2 三量体スピン鎖および ferro-ferro-antiferro 鎖における磁化プラトー,
物性研だより,
Vol. 39,
No. 1,
pp. 107-108,
2000.
-
Nobuhisa Okazaki,
Kiyomi Okamoto,
Toru Sakai.
Field-Induced Gaps in the Frustrated Spin Ladder,
J. Phys. Soc. Jpn. ,
Vol. 69,
No. 8,
pp. 2419-2422,
2000.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Toshiya Hikihara,
Yutaka Takahashi,
Makoto Kaburagi.
Ground-State Properties of an S=1/2 Distorted Diamond Chain,
J. Phys. Soc. Jpn.,
Vol. 69,
No. Suppl. A,
pp. 332-338,
2000.
-
Takashi Tonegawa,
Kiyomi Okamoto,
Toshiya Hikihara,
Yutaka Takahashi,
Makoto Kaburagi.
Ground State of an S=1/2 Distorted Diamond Chain,
RIKEN Review,
No. 27,
pp. 60-63,
2000.
-
Atsuhiro Kitazawa,
Kiyomi Okamoto.
Magnetization-Plateau State of the S=3/2 Spin Chain with Single Ion Anisotropy,
Phys. Rev. B,
Vol. 62,
No. 2,
pp. 940-945,
2000.
-
Kiyomi Okamoto,
Atsuhiro Kitazawa.
Quantum Phase Transition of S=1/2 Trimerized XXZ Spin Chain in Magnetic Field,
Physica B,
Vol. 281 & 282,
pp. 840-841,
2000.
-
Kiyomi Okamoto,
Atsuhiro Kitazawa.
Magnetization Plateau and Quantum Phase Transition of the S=1/2 Trimerized XXZ Spin Chain,
Journal of Physics A: Mathematical and General,
Vol. 32,
No. 5,
pp. 4601-4609,
1999.
-
岡本清美,
北澤充弘.
S = 1/2 Trimerized XXZ 鎖の磁化プラトー,
物性研究,
Vol. 72,
No. 6,
pp. 798-801,
1999.
-
Atsuhiro Kitazawa,
Kiyomi Okamoto.
Breakdown of the Magnetization Plateau in S=1/2 Ferromagnetic-Ferromagnetic-Antiferromagnetic Spin Chain,
Journal of Physics: Condensed Matter,
Vol. 11,
No. 48,
pp. 9765-9774,
1999.
-
Kiyomi Okamoto,
Takashi Tonegawa,
Yutaka Takahashi,
Makoto Kaburagi.
Ground State of the S=1/2 Distorted Diamond Chain --- Model of Cu3Cl6(H2O)2・2H8C4SO2,
Journal of Physics: Condensed Matter,
Vol. 11,
No. 50,
pp. 10485-10498,
1999.
-
岡崎暢寿,
坂井徹,
岡本清美.
フラストレートしたスピンラダーでの磁場誘起スピンギャップ,
物性研究,
Vol. 72,
No. 6,
pp. 811-816,
1999.
-
Tota Nakamura,
Kiyomi Okamoto.
Theoretical Analysis of the Experiments on the Double-Spin-Chain Compound-KCuCl3,
Physical Review B,
Vol. 58,
No. 5,
pp. 2411-2414,
1998.
-
Kiyomi Okamoto,
Tota Nakamura.
Critical Properties of the Spin-1/2 Heisenberg Chain with Frustration and Bond Alternation,
Journal of Physics A: Mathematical and General,
Vol. 30,
No. 18,
pp. 6287-6298,
1997.
-
Tota Nakamura,
Satoshi Takada,
Kiyomi Okamoto,
Naoki Kurosawa.
Haldane and Dimer Gap in General Double Spin-Chain Models,
Journal of Physics: Condensed Matter,
Vol. 9,
No. 30,
pp. 6401-6415,
1997.
-
KIYOMI OKAMOTO.
Critical properties of the transition between the Haldane phase and the large-D phase of the spin-1/2 ferromagnetic-antiferromagnetic Heisenberg chain with on-site anisotropy,
Journal of Physics A,
Vol. 29,
No. 8,
pp. 1639-1649,
1996.
-
KIYOMI OKAMOTO.
Critical Properties of the XXZ Chain in External Staggered Magnetic Field,
Journal of Physics A: Mathematical and General,
Vol. 29,
No. 9,
pp. 2279-2281,
1996.
-
Kiyomi Okamoto,
Atsyhiro Kitazawa.
Plateau of the Magnetization Curve of the S=1/2 Ferromagnetic-Ferromagnetic-Antiferromagnetic Spin Chain,
Solid State Communications,
Vol. 98,
No. 3,
pp. 245-248,
1996.
-
Atsuhiro Kitazawa,
Kiyohide Nomura,
Kiyomi Okamoto:.
Phase Diagram of S=1 Bond-Alternating XXZ Chain,
Physical Review Letters,
Vol. 76,
No. 21,
pp. 4038-4041,
1996.
-
KIYOMI OKAMOTO.
Twist Method for Quantum Ground-State Problems and its Application to Antiferromagnetic Heisenberg Chains with Competing Interactions,
Journal of the Physical Society of Japan,
Vol. 64,
No. 1,
pp. 86-92,
1995.
-
Kiyohide Nomura,
Kiyomi Okamoto.
Critical Properties of S=1/2 Antiferromagnetic XXZ Chain with Next-Nearest-Neighbor Interactions,
Journal of Physics A,
Vol. 27,
No. 17,
pp. 5773-5788,
1994.
-
KIYOMI OKAMOTO.
Comment on 'Ground-State Phase Diagram of the Spin-1/2 Ferromagnetic-Antiferromagnetic Alternating Heisenberg Chains with Anisotropy',
Physical Review B,
Vol. 48,
No. 17,
pp. 13149-13150,
1993.
-
KIYOMI OKAMOTO.
Haldane Phase and Large-D Phase of the Spin-1/2 Ferromagnetic-Antiferromagnetic Alternating Heisenberg Chain with On-Site Anisotropy,
Journal of the Physical Society of Japan,
Vol. 62,
No. 8,
pp. 2587-2590,
1993.
-
Kiyohide Nomura,
Kiyomi Okamoto.
Phase Diagram of S=1/2 Antiferromagnetic XYZ Chain with Next Nearest Neighbor Interactions,
Journal of the Physical Society of Japan,
Vol. 62,
No. 4,
pp. 1123-1126,
1993.
-
KIYOMI OKAMOTO.
S=1/2 XY Chain with the Ising Bond Alternation,
Solid State Communications,
Vol. 85,
No. 4,
pp. 343-345,
1993.
-
KIYOMI OKAMOTO.
S=1/2 Heisenberg Chain with Bond Alternation in the Sz-Sz Coupling,
Journal of the Physical Society of Japan,
Vol. 61,
No. 10,
pp. 3488-3493,
1992.
-
KIYOMI OKAMOTO.
Fluid-Dimer Critical Point in S=1/2 Antiferromagnetic Heisenberg Chain with Next Nearest Neighbor Interactions,
Physics Letters A,
Vol. 169,
No. 6,
pp. 433-437,
1992.
-
KIYOMI OKAMOTO.
Stability of S=1/2 Trimerized Antiferromagnetic XY Chain,
Solid State Communications,
Vol. 83,
No. 12,
pp. 1098-1041,
1992.
-
KIYOMI OKAMOTO.
Alternating S=1/2 XY Chain in Lorentzian Random Field,
Journal of the Physical Society of Japan,
Vol. 59,
No. 12,
pp. 4286-4296,
1990.
-
KIYOMI OKAMOTO.
Competition between the Bond Alternation and the Anisotropy in Spin-1/2 XY Chain,
Journal of the Physical Society of Japan,
Vol. 59,
No. 3,
pp. 993-1001,
1990.
-
KIYOMI OKAMOTO.
Phase Diagram of Spin-1/2 Alternating Ferromagnetic Chain with XY-like Anisotropy,
Journal of the Physical Society of Japan,
Vol. 58,
No. 12,
pp. 4367-4374,
1989.
-
KIYOMI OKAMOTO.
Longitudinal Spin Correlation in Spin-1/2 Dimerized XY Chain. II Finite Temperatures,
Journal of the Physical Society of Japan,
Vol. 58,
No. 6,
pp. 2004-2009,
1989.
-
KIYOMI OKAMOTO.
Longitudinal Spin Correlation in Spin-1/2 Dimerized XY Chain,
Journal of the Physical Society of Japan,
Vol. 57,
No. 9,
pp. 2947-2954,
1988.
-
KIYOMI OKAMOTO.
Ground-State of Spin-1/2 Alternating Heisenberg-XY Ferromagnet in One Dimension,
Journal of the Physical Society of Japan,
Vol. 57,
No. 5,
pp. 1610-1620,
1988.
-
KIYOMI OKAMOTO.
Specific Heat and Diamagnetic Susceptibility of Hg┣D23-δ┫D2AsF┣D26┫D2 above the Superconducting Transition Temperature,
Journal of the Physical Society of Japan,
Vol. 56,
No. 4,
pp. 1305-1308,
1987.
-
KIYOMI OKAMOTO.
Competition between the N(]E85EE[)el and the Effective Singlet States in the Spin-1/2 Alternating Heisenberg-Ising Antiferromagnet in One Dimension,
Journal of the Physical Society of Japan,
Vol. 56,
No. 11,
pp. 4126-4133,
1987.
-
KIYOMI OKAMOTO.
Effect of Overdeposition of Gold on the Fluctuation-Induced Conductivity of Superconducting Aluminum Films,
Journal of the Physical Society of Japan,
Vol. 56,
No. 11,
pp. 4022-4026,
1987.
-
KIYOMI OKAMOTO.
Superconducting Fluctuations above the Transition Temperature in the Mercury Chain Compound Hg┣D23-δ┫D2AsF┣D26┫D2,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 1375-1376,
1987.
-
KIYOMI OKAMOTO.
Pair-Breaking Mechanism for Disorder of Sb/Sn Thin Films,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 1337-1338,
1987.
-
KIYOMI OKAMOTO.
Superconducting Transition Temperature of Sb/Sn Thin Films ,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 1335-1336,
1987.
-
KIYOMI OKAMOTO.
Fluctuation-Induced Conductivity of Superconducting Films with the Overdeposition of Gold,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 1333-1334,
1987.
-
KIYOMI OKAMOTO.
Fluctuation-Induced Conductivity of Superconducting Films with the Lithium Fluoride Precoating,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 1331-1332,
1987.
-
KIYOMI OKAMOTO.
Spin Correlation in the Spin-Peierls System,
Japanese Journal of Applied Physics,
Vol. 26,
No. Suppl.26-3,
pp. 597-598,
1987.
-
KIYOMI OKAMOTO.
Fluctuation-Induced Conductivity in Superconducting Tin Films with the Overdeposition of Gold,
Journal of the Physical Society of Japan,
Vol. 56,
No. 7,
pp. 2516-2519,
1987.
-
KIYOMI OKAMOTO.
Temperature Dependence of the Correlation Length of <Siz Sjz> in Spin-1/2 Alternating Heisenberg-XY Antiferromagnets ,
Journal of the Physical Society of Japan,
Vol. 56,
No. 5,
pp. 1627-1630,
1987.
-
Hidetoshi Nishimori,
Kiyomi Okamoto.
Numerical Analysis of Spin-1/2 Alternating Heisenberg-XY Antiferromagnet in One-Dimension,
Journal of the Physical Society of Japan,
Vol. 56,
No. 3,
pp. 1132-1137,
1987.
-
KIYOMI OKAMOTO.
Correlation Function <Siz Sjz> in Spin--1/2 Alternating Heisenberg-XY Antiferromagnets in One-Dimension in Spin-1/2 Alternating Heisenberg-XY Antiferromagnets in One-Dimension,
Journal of the Physical Society of Japan,
Vol. 56,
No. 3,
pp. 912-917,
1987.
-
KIYOMI OKAMOTO.
Sugiyama-Gutfreund-Weger Model and the Paraconductivity in the Mercury Chain Compound Hg┣D23-δ┫D2AsF┣D26┫D2,
Journal of the Physical Society of Japan,
Vol. 55,
No. 11,
pp. 3713-3716,
1986.
-
KIYOMI OKAMOTO.
A Numerical Study of Spin-1/2 Alternating Antiferromagnetic Heisenberg Chains,
Journal of the Physical Society of Japan,
Vol. 55,
No. 5,
pp. 1458-1465,
1986.
-
KIYOMI OKAMOTO.
Metal-Insulator Transition of a One-Dimensional System of Interacting Electrons in a 2k┣D2F┫D2-Periodic Potential,
Progress of Theoretical Physics,
Vol. 75,
No. 3,
pp. 522-528,
1986.
-
KIYOMI OKAMOTO.
Ordered States of a One-Dimensional System of Interacting Electrons in a Full-Filled Band,
Solid State Communications,
Vol. 55,
No. 9,
pp. 799-802,
1985.
-
KIYOMI OKAMOTO.
Effect of Precoating on the Fluctuation-Induced Conductivity in Superconducting Metal Films,
Journal of the Physical Society of Japan,
Vol. 54,
No. 10,
pp. 3889-3894,
1985.
-
KIYOMI OKAMOTO.
A Theory of a One-Dimensional System of Interacting Electrons in a 2k┣D2F┫D2-Periodic Potential,
Progress of Theoretical Physics,
Vol. 71,
No. 4,
pp. 677-688,
1984.
-
KIYOMI OKAMOTO.
Electrical Conductivity of a Quasi-One-Dimensional Superconductor,
Progress of Theoretical Physics,
Vol. 69,
No. 5,
pp. 1666-1668,
1983.
-
KIYOMI OKAMOTO.
Impurity Scattering and Electrical Conductivity in a One-Dimensional Conductor,
Progress of Theoretical Physics,
Vol. 68,
No. 5,
pp. 1443-1459,
1982.
-
KIYOMI OKAMOTO.
The Perpendicular Conductivity in Quasi-One-Dimensional Superconductors,
Progress of Theoretical Physics,
Vol. 66,
No. 1,
pp. 33-40,
1981.
-
KIYOMI OKAMOTO.
Electrical Conductivity above the Superconducting Transition Temperature in Quasi-One-Dimensional Conductors,
Progress of Theoretical Physics,
Vol. 66,
No. 1,
pp. 15-32,
1981.
-
KIYOMI OKAMOTO.
Transition Temperatures of Quasi-One-Dimensional Conductors,
Progress of Theoretical Physics,
Vol. 66,
No. 3,
pp. 852-860,
1981.
-
KIYOMI OKAMOTO.
Hall Effect in Lead Films near the Superconducting Transition Temperature,
Journal of the Physical Society of Japan,
Vol. 46,
No. 2,
pp. 418-422,
1979.
-
KIYOMI OKAMOTO.
Resistive Superconducting Transition of Vanadium Films,
Physics Letters A,
Vol. 74,
No. 6,
pp. 441-442,
1979.
-
KIYOMI OKAMOTO.
Fluctuation-Induced Conductivity above the Superconducting Transition Temperature in Indium Films Containing Gadolinium Impurities,
Journal of the Physical Society of Japan,
Vol. 46,
No. 3,
pp. 772-777,
1979.
-
KIYOMI OKAMOTO.
Effect of Perpendicular Magnetic Field on Paraconductivity in a Superconductor Containing Magnetic Impurities,
Journal of the Physical Society of Japan,
Vol. 43,
No. 3,
pp. 1089-1090,
1977.
-
KIYOMI OKAMOTO.
Effects of Magnetic Impurities on Paraconductivity in Superconductors,
Journal of the Physical Society of Japan,
Vol. 42,
No. 4,
pp. 1136-1142,
1977.
-
KIYOMI OKAMOTO.
Fluctuation-Induced Conductivity above the Superconducting Transition Temperature in Thallium Films,
Journal of the Physical Society of Japan,
Vol. 40,
No. 5,
pp. 1256-1262,
1976.
著書
-
T. Sakai,
K. Okamoto,
N. Okazaki.
Field-Induced Transitions and Spin Gaps in Low-Dimensional Quantum Antiferromagnets,
Proceedings of French-Japanese Symposium on Quantum Properties of Low-Dimensinal Antiferromagnets (eds. Y.Ajiro and J.-P. Boucher, Kyushu University press, 2002),
Proceedings of French-Japanese Symposium on Quantum Properties of Low-Dimensinal Antiferromagnets (eds. Y.Ajiro and J.-P. Boucher, Kyushu University press, 2002),
pp. 62-69,
2002.
-
Kiyomi Okamoto,
Atsuhiro Kitazawa.
Magnetization Plateau of S=1/2 Trimerized XXZ Chain and Ferromagnetic-Ferromagnetic-Antiferromagnetic Chain,
Statistical Physics (AIP Conference Proceedings 519) American Institute of Physics,,
Statistical Physics (AIP Conference Proceedings 519) American Institute of Physics,,
pp. 344-347,
2000.
-
KIYOMI OKAMOTO.
Critical Exponents of the Energy Gap and the Energy Gain of the Spin-Peierils System with Next-Nearest-Neighbor Interactions,
Statistical Physics : Experiments, Theories and Computer Simulations (World Scientific),
Statistical Physics : Experiments, Theories and Computer Simulations (World Scientific),
pp. 116,
1998.
-
KIYOMI OKAMOTO.
Superconducting Transition Temperature of Quasi-One-Dimensional Conductors,
Proc. Int. Sym. Superconductive Quantum Electronics,
Proc. Int. Sym. Superconductive Quantum Electronics,
1984.
-
KIYOMI OKAMOTO.
Superconducting Fluctuation of Quasi-One-Dimensional Conductors,
Proc. Int. Sym. Superconductive Quantum Electronics,
Proc. Int. Sym. Superconductive Quantum Electronics,
1984.
-
KIYOMI OKAMOTO.
Electrical Resistivity of a Quasi-One-Dimensional Superconductor,
Proceedings of the Internatinal Symposium on Superconductive Quantum Electronics,
Proceedings of the Internatinal Symposium on Superconductive Quantum Electronics,
pp. 118,
1983.
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