Theory of Novel Quantum Phenomena Created by Spin, Charge, and Chirality in the Spin Nanotube

• Project/Area Number: 23340109
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: University of Hyogo
• Principal Investigator: SAKAI TORU 兵庫県立大学, 物質理学研究科, 教授 (60235116)
• Co-Investigator(Kenkyū-buntansha): NAKANO Hiroki 兵庫県立大学, 大学院物質理学研究科, 助教 (00343418) ; HIJII Keigo 日本原子力研究開発機構, 量子ビーム応用研究センター, 博士研究員 (00444068) ; OKAMOTO Kiyomi 東京工業大学, 大学院理工学研究科, 助教 (10114860) ; ISODA Makoto 香川大学, 教育学部, 教授 (10184590) ; OKUNISHI Kouichi 新潟大学, 自然科学系, 准教授 (30332646) ; TONEGAWA Takashi 神戸大学, 理学研究科, 名誉教授 (80028167) ; NOMURA Takuji 日本原子力研究開発機構, 量子ビーム応用研究センター, 研究員 (90373240)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000); Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2013: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000); Fiscal Year 2012: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2011: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
• Keywords: 量子スピン系 / ナノチューブ / スピンギャップ / フラストレーション / 量子相転移 / カイラリティ / スピンナノチューブ / 量子スピン液体 / カイラル秩序 / スピン液体 / 磁化プラトー / カイラル液体 / 超伝導

Outline of Final Research Achievements

The spin nanotube was theoretically investigated using the large-scale numerical diagonalization and density matrix renormalization group analysis. We found a novel quantum phase transition from the spin gap phase to the gapless spin liquid phase with respect to the spin anisotropy. It was also found that the quantum multispin exchange interaction induces another spin gap phase based on a different mechanism. In addition our theoretical study predicted a novel magnetic field induced phase, which is the chiral liquid phase.

Research Products

• [Journal Article] Instability of a ferromagnetic state of a frustrated S=1/2 Heisenberg antiferromagnet in two dimensions (2015)
  • Author(s): H. Nakano
  • Journal Title: Japanese Journal of Applied Physics Volume: 54 Issue: 3 Pages: 030305-030305
  • DOI: 10.7567/jjap.54.030305
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Quantum Spin-Liquid Behavior in the Spin-1/2 Random Heisenberg Antiferromagnet on the Triangular Lattice (2014)
  • Author(s): K. Watanabe
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 3 Pages: 034714-034714
  • DOI: 10.7566/jpsj.83.034714
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Exotic Quantum Phenomena in the Spin Nanotubes (2014)
  • Author(s): T. Sakai
  • Journal Title: JPS Conference Proceedings Volume: 1
  • DOI: 10.7566/jpscp.1.012025
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Exotic Magnetism of the Quantum Spin Nanotube (2014)
  • Author(s): T. Sakai
  • Journal Title: JPS Conference Proceedings Volume: 2
  • DOI: 10.7566/jpscp.2.010208
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Edge Modes in the Intermediate-D and Large-D Phases of the S = 2 Quantum Spin Chain with XXZ and On-Site Anisotropies (2014)
  • Author(s): K. Okamoto
  • Journal Title: JPS Conference Proceedings Volume: 3
  • DOI: 10.7566/jpscp.3.014022
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetization Process of the S=1/2 Heisenberg Antiferromagnet on the Cairo Pentagon Lattice (2014)
  • Author(s): H. Nakano
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 5 Pages: 053702-053702
  • DOI: 10.7566/jpsj.83.053702
  • NAID: 40020060183
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Anomalous Quantum Magnetization Behaviors of the Kagome and Triangular Lattice Antiferromagnets (2014)
  • Author(s): H. Nakano
  • Journal Title: JPS Conference Proceedings Volume: 3
  • DOI: 10.7566/jpscp.3.014003
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Exotic Quantum Phase Transition of the Spin Nanotube (2014)
  • Author(s): T. Sakai
  • Journal Title: Journal of Physics: Conference Series Volume: 568 Issue: 4 Pages: 042024-042024
  • DOI: 10.1088/1742-6596/568/4/042024
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Novel Field Induced Quantum Phase Transition of the Kagome Lattice (2014)
  • Author(s): T. Sakai
  • Journal Title: Journal of Physics: Conference Series Volume: 568 Issue: 4 Pages: 042025-042025
  • DOI: 10.1088/1742-6596/568/4/042025
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Spin-Flop Phenomenon of Two-Dimensional Frustrated Antiferromagnets (2014)
  • Author(s): H. Nakano
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 8 Pages: 084709-084709
  • DOI: 10.7566/jpsj.83.084709
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Frustration-Induced Magnetic Properties of the Spin-1/2 Heisenberg Antiferromagnet on the Cairo Pentagon Lattice (2014)
  • Author(s): M. Isoda
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 8 Pages: 084710-084710
  • DOI: 10.7566/jpsj.83.084710
  • NAID: 40020158126
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Anomalous Behavior of the Magnetization Process of the S=1/2 Kagome-Lattice Heisenberg Antiferromagnet at One-Third Height of the Saturation (2014)
  • Author(s): H. Nakano
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 10 Pages: 104710-104710
  • DOI: 10.7566/jpsj.83.104710
  • NAID: 40020226390
  • Peer Reviewed / Open Access
• [Journal Article] Fine-Tuning of Magnetic Interactions in Organic Spin Ladders (2014)
  • Author(s): H. Yamaguchi
  • Journal Title: Journal of Physical Society of Japan Volume: 83 Issue: 3 Pages: 33707-33707
  • DOI: 10.7566/jpsj.83.033707
  • Peer Reviewed
• [Journal Article] Doubling of Entanglement Spectrum in Tenor Renormalization Group (2014)
  • Author(s): Hiroshi Ueda, Kouichi okunishi, Tomotoshi Nishino
  • Journal Title: Phys. Rev. B Volume: 89 Issue: 7 Pages: 1-10
  • DOI: 10.1103/physrevb.89.075116
  • Peer Reviewed
• [Journal Article] Inversion Phenomena of the Anisotropies of the Hamiltonian and the Wave Function in Quantum Spin Chains (2014)
  • Author(s): K. Okamoto
  • Journal Title: JPS Conference Proceedings Volume: 1
  • DOI: 10.7566/jpscp.1.012031
  • Peer Reviewed
• [Journal Article] Anomalous Dressing of Dirac Fermions in the Topological Surface State of Bi2Se3, Bi2Te3, and Cu-Doped Bi2Se3 (2013)
  • Author(s): T. Kondo
  • Journal Title: Phys. Rev. Lett Volume: 110 Issue: 6 Pages: 32002-32002
  • DOI: 10.1103/physrevlett.112.068103
  • Peer Reviewed
• [Journal Article] Novel Field-Induced Quantum Phase Transition of the Kagome-Lattice Antiferromagnet (2013)
  • Author(s): T. Sakai
  • Journal Title: Journal of Korean Physical Society Volume: 63 Issue: 3 Pages: 601-604
  • DOI: 10.3938/jkps.63.601
  • Peer Reviewed
• [Journal Article] The Two-Dimensional S=1/2 Heisenberg Antiferromagnet on the Shuriken Lattice -a Lattice Composed of Vertex-Sharing Triangles- (2013)
  • Author(s): H. Nakano
  • Journal Title: Journal of Physical Society of Japan Volume: 82 Issue: 8 Pages: 083709-083709
  • DOI: 10.7566/jpsj.82.083709
  • NAID: 40019745066
  • Peer Reviewed
• [Journal Article] Nontrivial ferrimagnetism of the Heisenberg model on the Union Jack (2013)
  • Author(s): T. Shimokawa
  • Journal Title: Journal of Korean Physical Society Volume: 63 Issue: 3 Pages: 591-595
  • DOI: 10.3938/jkps.63.591
  • Peer Reviewed
• [Journal Article] Unconventional Magnetic and Thermodynamic Properties of S=1/2 Spin (2013)
  • Author(s): H. Yamaguchi
  • Journal Title: Physical Review Letters Volume: 110 Issue: 15
  • DOI: 10.1103/physrevlett.110.157205
  • Peer Reviewed
• [Journal Article] Crystal Structure and Magnetic Properties of the Verdazyl Biradical (2013)
  • Author(s): K. Iwase
  • Journal Title: Journal of Physical Society of Japan Volume: 82 Issue: 7 Pages: 074719-074719
  • DOI: 10.7566/jpsj.82.074719
  • Peer Reviewed
• [Journal Article] Quantum Phase Transitions in 1/3 Plateau of the Quantum Spin Tube (2013)
  • Author(s): K. Okunishi
  • Journal Title: Journal of Korean Physical Society Volume: 63 Issue: 3 Pages: 596-600
  • DOI: 10.3938/jkps.63.596
  • Peer Reviewed
• [Journal Article] Collapse of Magnetic Order of the Quasi One-Dimensional Ising-Like Antiferromagnet BaCo_2V_2O_8 in Transverse Fields (2013)
  • Author(s): Shojiro Kimura, Koichi Okunishi, Masayuki Hagiwara, Koichi Kindo, Zhangzhen He, Tomoyasu Taniyama, Mitsuru Itoh, Keiichi Koyama, and Kazuo Watanabe
  • Journal Title: Journal of the Physical Society of Japan Volume: vol.82 Issue: 3 Pages: 0337061-4
  • DOI: 10.7566/jpsj.82.033706
  • Peer Reviewed
• [Journal Article] Magnetization curve of the kagome-strip-lattice antiferromagnet (2013)
  • Author(s): T. Shimokawa
  • Journal Title: Journal of Low Temperature Physics Volume: 170 Issue: 5-6 Pages: 328-333
  • DOI: 10.1007/s10909-012-0701-9
  • Peer Reviewed
• [Journal Article] Quantum Critical Magnetization Behaviors of the Kagome- and Triangular-Lattice Antiferromagnets (2013)
  • Author(s): T. Sakai
  • Journal Title: Journal of Low Temperature Physics Volume: 170 Issue: 5-6 Pages: 255-260
  • DOI: 10.1007/s10909-012-0735-z
  • Peer Reviewed
• [Journal Article] Quantum critical magnetization behaviors of kagome- and triangular-lattice antiferromagnets (2013)
  • Author(s): T. Sakai
  • Journal Title: Physica Status Solidi B Volume: 250 Issue: 3 Pages: 579-582
  • DOI: 10.1002/pssb.201200763
  • Peer Reviewed
• [Journal Article] Long-Range Order of the Three-Sublattice Structure in the S=1 Heisenberg Antiferromagnet on a Spatially Anisotropic Triangular Lattice (2013)
  • Author(s): H. Nakano
  • Journal Title: Journal of the Physical Society of Japan Volume: 82 Issue: 4 Pages: 43715-43715
  • DOI: 10.7566/jpsj.82.043715
  • NAID: 210000132502
  • Peer Reviewed
• [Journal Article] Crystal structure and magnetic properties of honeycomb-like lattice antiferromagnet p-BIP-V2 (2013)
  • Author(s): H. Yamaguchi
  • Journal Title: Physical Review B Volume: 87 Issue: 12
  • DOI: 10.1103/physrevb.87.125120
  • Peer Reviewed
• [Journal Article] Anomalous behavior of the spin gap of a spin-1/2 two-leg antiferromagnetic ladder with Ising-like rung interactions (2013)
  • Author(s): T. Tonegawa
  • Journal Title: Physica Status Solidi B Volume: 250 Issue: 3 Pages: 575-578
  • DOI: 10.1002/pssb.201200757
  • Peer Reviewed
• [Journal Article] Spin-chirality separation and S3-symmetry breakings in the magnetization plateau of the quantum spin tube (2012)
  • Author(s): Kouichi Okunishi, Masahiro Sato, Toru Sakai, Kiyomi Okamoto, and Chigak. Itoi
  • Journal Title: Phys. Rev. B Volume: 85 Issue: 5 Pages: 54416-54416
  • DOI: 10.1103/physrevb.85.054416
  • Peer Reviewed
• [Journal Article] Magnetic field-induced phase transitions in the S=1/2 two-leg spin-ladder material Cu(DEP)Br2 (2012)
  • Author(s): Z. Honda, H.A. Katori, M. Ikeda, M. Hagiwara, K. Okunishi, M. Sakai, T. Fukuda, N. Kamata
  • Journal Title: Journal of Physical Society of Japan Volume: 81 Issue: 11 Pages: 113710-4
  • DOI: 10.1143/jpsj.81.113710
  • Peer Reviewed
• [Journal Article] Novel Field-Induced Quantum Phase Transition of the Kagome-Lattice Antiferromagnet (2012)
  • Author(s): T. Sakai
  • Journal Title: Journal of Physics: Conference Series Volume: 400 Issue: 3 Pages: 32076-32076
  • DOI: 10.1088/1742-6596/400/3/032076
  • Peer Reviewed
• [Journal Article] Magnetic Phase Transition in the Verdazyl Biradical Crystal p-BIP-V2 (2012)
  • Author(s): H. Yamaguchi
  • Journal Title: Journal of Physics: Conference Series Volume: 400 Issue: 3 Pages: 32118-32118
  • DOI: 10.1088/1742-6596/400/3/032118
  • Peer Reviewed
• [Journal Article] A Consistent Description of Magnetic Properties of the Triangulated-Kagome System Cu9X2(cpa)6nH2O (2012)
  • Author(s): M. Isoda
  • Journal Title: Journal of the Physical Society of Japan Volume: 81 Issue: 5 Pages: 053703-053703
  • DOI: 10.1143/jpsj.81.053703
  • NAID: 210000109511
  • Peer Reviewed
• [Journal Article] Ferrimagnetism of the Heisenberg Models on the Quasi-One-Dimensional Kagome Strip Lattices (2012)
  • Author(s): T. Shimokawa
  • Journal Title: Journal of the Physical Society of Japan Volume: 81 Issue: 8 Pages: 084710-084710
  • DOI: 10.1143/jpsj.81.084710
  • Peer Reviewed
• [Journal Article] Dzyaloshinsky-Moriya interaction and field-induced magnetic order in an antiferromagnetic honeycomb lattice compound Bi_3Mn_4O_12(NO_3) studied by high-field electron spin resonance (2012)
  • Author(s): S. Okubo, T. Ueda, H. Ohta, W. Zhang, T. Sakurai, N. Onishi, M. Azuma, Y. Shimakawa, H. Nakano, T. Sakai
  • Journal Title: Phys. Rev. B Volume: 86 Issue: 14
  • DOI: 10.1103/physrevb.86.140401
  • Peer Reviewed
• [Journal Article] Evaluation of Spin-Triplet Superconductivity in Sr_2RuO_4 (2012)
  • Author(s): Y.Maeno, S.Kittaka, T.Nomura, S.Yonezawa, K.Ishida
  • Journal Title: Journal of the Physical Society of Japan Volume: 81 Issue: 1 Pages: 11009-11009
  • DOI: 10.1143/jpsj.81.011009
  • Peer Reviewed
• [Journal Article] Analysis of Resonant Inelastic X-ray Scattering in Stripe-Ordered Nickelate (2012)
  • Author(s): T. Nomura, E. Kaneshita
  • Journal Title: Journal of Physical Society of Japan Volume: 81 Issue: 2 Pages: 0247071-11
  • DOI: 10.1143/jpsj.81.024707
  • NAID: 40019151531
  • Peer Reviewed
• [Journal Article] Frustration Induced Ferrimagnetism in S=1/2 Heisenberg Spin Chain (2011)
  • Author(s): T.Shimokawa
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 4 Pages: 043703-043703
  • DOI: 10.1143/jpsj.80.043703
  • Peer Reviewed
• [Journal Article] Numerical-Diagonalization Study of Spin Gap Issue of the Kagome Lattice Heisenberg Antiferromagnet (2011)
  • Author(s): H.Nakano
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 5 Pages: 053704-053704
  • DOI: 10.1143/jpsj.80.053704
  • NAID: 40018798403
  • Peer Reviewed
• [Journal Article] Thermodynamic Properties of Spin-1/2 Ising-like Heisenberg Model on Triangle-based Lattices (2011)
  • Author(s): M.Isoda
  • Journal Title: Modern Physics Letters B Volume: 25 Issue: 12n13 Pages: 909-915
  • DOI: 10.1142/s0217984911026619
  • Peer Reviewed
• [Journal Article] Ferrimagnetism of the Heisenberg model on the Kagome strip lattice (2011)
  • Author(s): T.Shimokawa
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012007-012007
  • DOI: 10.1088/1742-6596/320/1/012007
  • Peer Reviewed
• [Journal Article] Quantum critical phenomena in magnetization process of the Kagome and triangular lattice antiferromagnets (2011)
  • Author(s): T.Sakai
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012016-012016
  • DOI: 10.1088/1742-6596/320/1/012016
  • Peer Reviewed
• [Journal Article] Numerical exact diagonalization study of triangulated kagome Heisenberg spin system (2011)
  • Author(s): M.Isoda
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012010-012010
  • DOI: 10.1088/1742-6596/320/1/012010
  • Peer Reviewed
• [Journal Article] Magnetization ramp of the kagome lattice antiferromagnet (2011)
  • Author(s): H.Nakano
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012017-012017
  • DOI: 10.1088/1742-6596/320/1/012017
  • Peer Reviewed
• [Journal Article] Ground-state phase diagram of S=2 quantum spin chain with the XXZ and on-site anisotropies (2011)
  • Author(s): K.Okamoto
  • Journal Title: Journal of Physics : Conference Series Volume: 302 Pages: 012014-012014
  • DOI: 10.1088/1742-6596/302/1/012014
  • Peer Reviewed
• [Journal Article] Specific Heat and Magnetic Susceptibility of Ising-like Anisotropic Heisenberg Model on Kagome Lattice (2011)
  • Author(s): M.Isoda
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 8 Pages: 084704-084704
  • DOI: 10.1143/jpsj.80.084704
  • NAID: 40018947234
  • Peer Reviewed
• [Journal Article] Hyperbolic Deformation Applied to S=1 Spin Chains-Scaling Relation in Excitation Energy- (2011)
  • Author(s): Hiroshi Ueda
  • Journal Title: Journal of the Physical Society of Japan Volume: 80 Issue: 9 Pages: 094001-094001
  • DOI: 10.1143/jpsj.80.094001
  • Peer Reviewed
• [Journal Article] Quantum Magnetization Plateau in Spin-1 Triangular-Lattice Antiferromagnet Ba3NiSb2O9 (2011)
  • Author(s): Y.Shirata
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 9 Pages: 093702-093702
  • DOI: 10.1143/jpsj.80.093702
  • Peer Reviewed
• [Journal Article] Magnetic-Field Induced Quantum Phase Transitions in Triangular-Lattice Antiferromagnets (2011)
  • Author(s): T.Ono
  • Journal Title: Journal of Physics : Conference Series Volume: 302 Pages: 012003-012003
  • DOI: 10.1088/1742-6596/302/1/012003
  • Peer Reviewed
• [Journal Article] How to distinguish the Haldane/Large-D state and the intermediate-D state in an S=2 quantum spin chain with the XXZ and on-site anisotropies (2011)
  • Author(s): K.Okamoto
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012018-012018
  • DOI: 10.1088/1742-6596/320/1/012018
  • Peer Reviewed
• [Journal Article] Frustration Induced Ferrimagnetism in Heisenberg Spin Chains (2011)
  • Author(s): T.Shimokawa
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 12 Pages: 125003-125003
  • DOI: 10.1143/jpsj.80.125003
  • Peer Reviewed
• [Journal Article] Numerical Study on the Spin Gap of the Kagome Lattice Antiferromagnet (2011)
  • Author(s): T.Sakai
  • Journal Title: Journal of Physical Society of Japan, Supplement B Volume: 80
  • Peer Reviewed
• [Journal Article] Magnetization Plateau of the Quantum Spin Nanotube (2011)
  • Author(s): K.Okamoto
  • Journal Title: Physica E Volume: 43 Issue: 3 Pages: 769-772
  • DOI: 10.1016/j.physe.2010.07.047
  • Peer Reviewed
• [Journal Article] Haldane, Large-D and Intermediate-D States in an S=2 Quantum Spin Chain with On-Site and XXZ Anisotropies (2011)
  • Author(s): T.Tonegawa
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 4 Pages: 043001-043001
  • DOI: 10.1143/jpsj.80.043001
  • Peer Reviewed
• [Journal Article] Exotic Quantum Critical Phenomena of the Spin Nanotubes (2011)
  • Author(s): T.Sakai
  • Journal Title: Journal of Physics : Conference Series Volume: 302 Pages: 012013-012013
  • DOI: 10.1088/1742-6596/302/1/012013
  • Peer Reviewed
• [Journal Article] Exotic quantum phase transitions in the spin nanotube (2011)
  • Author(s): T.Sakai
  • Journal Title: Journal of Physics : Conference Series Volume: 320 Pages: 012022-012022
  • DOI: 10.1088/1742-6596/320/1/012022
  • Peer Reviewed
• [Journal Article] 寵目格子反強磁性体の磁化過程--「磁化ランプ」という異常臨界現象-- (2011)
  • Author(s): 中野博生
  • Journal Title: 日本物理学会誌 Volume: 66 Pages: 832-836
  • Peer Reviewed
• [Journal Article] Novel Phase Transition Probed by Sound Velocity in Quasi-One-Dimensionial Ising-Like Antiferromagnet BaCo2V2O8 (2011)
  • Author(s): H.Yamaguchi
  • Journal Title: Journal of Physical Society of Japan Volume: 80 Issue: 3 Pages: 33701-33701
  • DOI: 10.1143/jpsj.80.033701
  • Peer Reviewed
• [Journal Article] Topological disentangler for the valence-bond-solid chain (2011)
  • Author(s): K.Okunishi
  • Journal Title: Physical Review B Volume: 83 Issue: 10
  • DOI: 10.1103/physrevb.83.104411
  • Peer Reviewed
• [Journal Article] Topological Aspects of the Quantum Spin Nanotube (2011)
  • Author(s): Y.Otsuka
  • Journal Title: Journal of Physics : Conference Series Volume: 344 Pages: 012009-012009
  • DOI: 10.1088/1742-6596/344/1/012009
  • Peer Reviewed
• [Journal Article] Monte Carlo Study of Relaxor Systems: A Minimum Model of Pb(In_<1/2>Nb_<1/2>)O_3 (2010)
  • Author(s): Y. Tomita, T. Kato, K. Hirota
  • Journal Title: J. Phys. Soc. Jpn. Volume: 79(2) Issue: 2 Pages: 023001-023001
  • DOI: 10.1143/jpsj.80.023001
  • Peer Reviewed
• [Presentation] Singlet-Triplet Transition of ESR in Gapped Spin Systems (2014)
  • Author(s): T. Sakai
  • Organizer: sia-Pacific EPR/ESR Society、International EPR(ESR) Society合同シンポジウム
  • Place of Presentation: 東大寺文化センター(奈良県）
  • Year and Date: 2014-11-12 – 2014-11-16
• [Presentation] A Quantum Phase Transition of the Distorted Kagome Lattice Antiferromagnet (2014)
  • Author(s): T. Sakai
  • Organizer: Novel Quantum States in Condensed Matter 2014
  • Place of Presentation: 京都大学基礎物理学研究所（京都府）
  • Year and Date: 2014-11-04 – 2014-12-05
• [Presentation] Spin Nanotubes (2014)
  • Author(s): T. Sakai
  • Organizer: International Meeting on Spin in Organic Semiconductors
  • Place of Presentation: イーグレ姫路（兵庫県）
  • Year and Date: 2014-10-13 – 2014-10-17
• [Presentation] Magnetization Process of the S=1/2 Kagome-Lattice Antiferromagnet and Related Systems (2014)
  • Author(s): T. Sakai
  • Organizer: ラプラタ大学セミナー
  • Place of Presentation: ラプラタ大学（アルゼンチン/ラプラタ）
  • Year and Date: 2014-08-13
  • Invited
• [Presentation] Novel Field Induced Quantum Phase Transition of Kagome Lattice Antiferromagnet (2014)
  • Author(s): T. Sakai
  • Organizer: International Conference on Low Temperature Physics (LT)
  • Place of Presentation: アルゼンチン/ブエノスアイレス
  • Year and Date: 2014-08-06 – 2014-08-13
• [Presentation] Exotic Quantum Phase Transition of the Spin Nanotube (2014)
  • Author(s): T. Sakai
  • Organizer: International Conference on Low Temperature Physics (LT)
  • Place of Presentation: アルゼンチン/ブエノスアイレス
  • Year and Date: 2014-08-06 – 2014-08-13
• [Presentation] Field-Induced Quantum Critical phenomena in Kagome-Lattice Antiferromanget (2014)
  • Author(s): T. Sakai
  • Organizer: 国際会議Highly Frustrated Magnetism
  • Place of Presentation: ケンブリッジ大学（英国/ケンブリッジ）
  • Year and Date: 2014-07-07 – 2014-07-11
• [Presentation] スピンナノチューブ (2014)
  • Author(s): 坂井徹
  • Organizer: 東北大学物性コロキュウム
  • Place of Presentation: 東北大学理学部（宮城県）
  • Year and Date: 2014-07-03
  • Invited
• [Presentation] 籠目格子反強磁性体の理論 (2014)
  • Author(s): 坂井徹
  • Organizer: 日本物理学会
  • Place of Presentation: 東海大学（神奈川県）
  • Invited
• [Presentation] 数値くりこみ群の発展‐密度行列くりこみ群からMERAまで (2014)
  • Author(s): 奥西巧一
  • Organizer: 日本物理学会
  • Place of Presentation: 東海大学（神奈川県）
  • Invited
• [Presentation] スピン空間に異方性のない系でのスピンフロップ現象 (2014)
  • Author(s): 中野博生
  • Organizer: 日本物理学会
  • Place of Presentation: 東海大学（神奈川県）
• [Presentation] Topological Aspects of the Quantum Spin Nanotubes (2013)
  • Author(s): T. Sakai
  • Organizer: ISSP International Workshop "Emergent Quantum Phases in Condensed Matter"
  • Place of Presentation: Institute for Solid State Physics, University of Tokyo（千葉県）
  • Invited
• [Presentation] スピンナノチューブの物理 (2013)
  • Author(s): 坂井徹
  • Organizer: 日本物理学会
  • Place of Presentation: 徳島大学（徳島県）
  • Invited
• [Presentation] Inversion Phenomena of the Anisotropies of the Hamiltonian and the Wave Function in Quantum Spin Chains (2013)
  • Author(s): Ｋ． Ｏｋａｍｏｔｏ
  • Organizer: The 12th Asia Pacific Physics Conference
  • Place of Presentation: International Conference Halls, Makuhari Messe Chiba（千葉県）
• [Presentation] Two-Dimensional Frustrated Antiferromagnets by Large-Scale Parallel Calculations of Numerical Diagonalizations (2013)
  • Author(s): H. Nakano
  • Organizer: JAEA Synchrotron Radiation Research Symposium “Magnetism in Quantum Beam Science”
  • Place of Presentation: SPring-8（兵庫県）
  • Invited
• [Presentation] Spin Nanotubes (2013)
  • Author(s): T. Sakai
  • Organizer: JAEA Synchrotron Radiation Research Symposium “Magnetism in Quantum Beam Science”
  • Place of Presentation: SPring-8（兵庫県）
  • Invited
• [Presentation] Magnetism of Frustrated Quantum Spin Systems (2013)
  • Author(s): T. Sakai
  • Organizer: International Workshop on Development of Functional Molecule-Based Magnetic Materials
  • Place of Presentation: 東北大学金属材料研究所（宮城県）
  • Invited
• [Presentation] アズライトと歪んだダイヤモンド型スピン鎖（総括） (2013)
  • Author(s): 岡本清美
  • Organizer: 量子スピン系研究会
  • Place of Presentation: 新潟大学（新潟県）
  • Invited
• [Presentation] 数値対角化法による2次元フラストレート系の研究-カゴメ格子反強磁性体と三角格子反強磁性体- (2012)
  • Author(s): 中野博生
  • Organizer: 東大物性研短期研究会、物性研究所共同利用スパコン成果報告会「計算科学の課題と展望」
  • Place of Presentation: 東京大学物性研究所(千葉県)(招待講演)
  • Year and Date: 2012-02-21
• [Presentation] 量子スピンチューブの最近の発展(理論) (2012)
  • Author(s): 奥西巧一
  • Organizer: 京都大学基礎物理学研究所研究会「量子スピン系の物理」
  • Place of Presentation: 京都大学基礎物理学研究所（京都府）
  • Invited
• [Presentation] カゴメ格子反強磁性体の数値対角化による研究 (2012)
  • Author(s): 坂井徹
  • Organizer: 京都大学基礎物理学研究所研究会「量子スピン系の物理」
  • Place of Presentation: 京都大学基礎物理学研究所（京都府）
  • Invited
• [Presentation] Ground-State Phase Diagram of an Anisotropic S=2 Antiferromagnetic Quantum (2012)
  • Author(s): T. Tonegawa
  • Organizer: ハンガリー科学アカデミー・セミナー
  • Place of Presentation: ハンガリー科学アカデミー・ブダペスト（ハンガリー）
  • Invited
• [Presentation] Semi-classical Spin-Liquid State as a Low-Energy Excited State in Frustrated Quantum Spin Systems on Triangle-based Lattice System (2012)
  • Author(s): M. Isoda
  • Organizer: International Conference on Magnetism
  • Place of Presentation: BEXCO釜山（韓国）
• [Presentation] カゴメ格子反強磁性体の新しい量子現象'磁化ランプ'とスピンギャップ問題 (2011)
  • Author(s): 中野博生
  • Organizer: 日本物理学会2011年秋季大会
  • Place of Presentation: 富山大学五福キャンパス(富山県)(招待講演)
  • Year and Date: 2011-09-23
• [Presentation] Quantum Critical Magnetization Behaviors of the Kagome and Triangular Lattice Antiferromagnets (2011)
  • Author(s): T.Sakai
  • Organizer: Workshop on Development of Functionalized Molecular-Based Magnetic Materials
  • Place of Presentation: IMR, Tohoku University, Sendai(宮城県)(Invited)(招待講演)
  • Year and Date: 2011-09-12
• [Presentation] 量子スピン系の大規模並列数値対角化計算---カゴメ格子反強磁性体の物性解明--- (2011)
  • Author(s): 中野博生
  • Organizer: 異分野交流研究会「量子系の固有値問題と大規模計算」
  • Place of Presentation: 筑波大学計算科学研究センター(茨城県)(招待講演)
  • Year and Date: 2011-07-26
• [Book] 計算物理学 (2014)
  • Author(s): 坂井徹
  • Total Pages: 137
  • Publisher: 共立出版
• [Remarks] 量子シミュレーション研究グループ
  • URL: http://cmt.spring8.or.jp/
• [Remarks] 量子シミュレーション研究グループ
  • URL: http://cmt.spring8.or.jp/link.shtml