Study of Novel State for Bilayer Quantum Hall Effect

• Project/Area Number: 18340088
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: Kyoto University
• Principal Investigator: SAWADA Anju Kyoto University, 低温物質科学研究センター, 教授 (90115577)
• Co-Investigator(Kenkyū-buntansha): ARAI Toshikazu 京都大学, 低温物質科学研究センター, 助教 (80333318) ; FUKUDA Akira 兵庫医科大学, 医学部, 准教授 (70360633) ; EZAWA Jyunniti 東北大学, 理学研究科, 教授 (90133925)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥16,470,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥2,370,000); Fiscal Year 2008: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2007: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000); Fiscal Year 2006: ¥6,200,000 (Direct Cost: ¥6,200,000)
• Keywords: メゾスコピック系 / 局在 / 量子ホール効果 / 2次元電子系 / 2層系 / マイクロ波 / ソリトン格子 / 磁気抵抗 / ホール抵抗 / マクロコヒーレンス / 擬スピン / 層間相互作用 / ゴニオメーター

Research Abstract

2層系ν=1量子ホール状態は, 2次元空間の特殊性から単独電子がボーズ凝縮した状態と考えることができる. 従って超伝導におけるジョセフソン効果に類似する現象が期待でき, その現象を捉えることは量子ホール状態がボーズ凝縮状態であることを検証することになる. 我々は2層系ν=1量子ホール状態における新しい状態の面内磁場に対する伝導特性の異方性測定を行い, 擬スピン・ソリトン格子相であることを明らかにし, 量子ホール状態がボーズ凝縮状態であることを検証した.

Research Products

• [Journal Article] 2層系ν=1量子ホール効果におけるソリトン格子相 (2008)
  • Author(s): 福田昭・澤田安樹
  • Journal Title: 固体物理 43 Pages: 361-369
• [Journal Article] Modulation of bilayer quantum Hall states by tilted field induced subband Landau level coupling (2008)
  • Author(s): N. Kumada, K.Iwata, K. Tagashira, Y. Shimoda, K.Muraki, Y. Hirayama and A. Sawada
  • Journal Title: Phys. Rev. B 77 155324 Pages: 1-7
  • Peer Reviewed
• [Journal Article] Activation Study of the ν= 1/3 Bilayer Quantum Hall State (2008)
  • Author(s): A. Fukuda, K. Iwata,T. Sekikawa, T. Arai, N. Kumada, Y.Hirayama, Z. F. Ezawa and A. Sawada
  • Journal Title: Physica E 40 Pages: 1261-1263
  • Peer Reviewed
• [Journal Article] Anisotropic Magnetotransport by the Psudospin Soliton in the ν =1 Bilayer Quantum Hall System (2008)
  • Author(s): A. Fukuda, M.Morino, K. Iwata, D. Terasawa, S. Kozumi, N. Kumada, Y. Hirayama, Z.F. Ezawa and A.Sawada
  • Journal Title: Physica E 40 Pages: 1255-1257
  • Peer Reviewed
• [Journal Article] Effects of In-Plane Magnetic Field Direction on the Nuclear Spin Relaxation in the ν =2/3 Quantum Hall State (2008)
  • Author(s): K.Iwata, M. Morino, A. Fukuda, A. Sawada,M. Suzuki, Z.F. Ezawa, N. Kumada, Y.Hirayama
  • Journal Title: Physica E 40 Pages: 1175-1177
  • Peer Reviewed
• [Journal Article] Interlayer Phase Coherence and Dissipative Soliton-Lattice Regime in Bilayer Quantum Hall Systems (2008)
  • Author(s): Z.F.Ezawa, K. Ishiia and G. Tsitsishvili
  • Journal Title: Physica E40 Pages: 1557-1559
  • Peer Reviewed
• [Journal Article] Anomalous Diagonal Resistivity and Soliton Lattice in Bilayer Quantum Hall Systems (2008)
  • Author(s): Z.F. Ezawa, K. Ishiia and G.Tsitsishvili
  • Journal Title: Physica B 403 Pages: 1517-1519
  • Peer Reviewed
• [Journal Article] Resistance Anomaly induced by Interlayer Phase Solitons in a Double-Layer Quantum Hall Effect (2008)
  • Author(s): A. Fukuda, D. Terasawa, et al.
  • Journal Title: Physical Review Letters 100
  • Peer Reviewed
• [Journal Article] Modulation of bilayer quantum Hall states by tilted-field-induced subband-Landau-level coupling (2008)
  • Author(s): N. Kumada, K. Iwata, et al.
  • Journal Title: Physical Review B 77
  • Peer Reviewed
• [Journal Article] Anisotropic Magnetotransport by the Psudospin Soliton inthe ν=1 Bilayer Quantum Hall System (2008)
  • Author(s): A. Fukuda, M. Morino, et al.
  • Journal Title: Physica E 40 Pages: 1255-1257
  • Peer Reviewed
• [Journal Article] Resistance Anomaly induced by Interlayer Phase Solitons in a Double-Layer Quantum Hall Effect (2008)
  • Author(s): A. Fukuda, D. Terasawa, et. al.
  • Journal Title: Physical Review Letters 100
  • Peer Reviewed
• [Journal Article] Activation Study of the ν=1/3 Bilayer Quantum Hall State (2008)
  • Author(s): A. Fukuda, K. Iwata, et. al.
  • Journal Title: Physica E 40 Pages: 1261-1263
  • Peer Reviewed
• [Journal Article] Anisotropic Magnetotransport by the Psudospin Soliton in the ν=1 Bilayer Quantum Hall System (2008)
  • Author(s): A. Fukuda, M. Morino, et. al.
  • Journal Title: Physica E 40 Pages: 1255-1263
  • Peer Reviewed
• [Journal Article] Pseudospin Soliton in theν=1 Bilayer Quantum Hall Effect (2007)
  • Author(s): A. Fukuda, D.Terasawa, M. Morino, K. Iwata, S. Kozumi, N. Kumada, Y. Hirayama, Z.F. Ezawa and A. Sawada
  • Journal Title: Phys. Rev. Lett. 100, 016801 Pages: 1-4
• [Journal Article] Effects of In-plane Magnetic Fields on the Canted Antiferromagnetic Phase in the Bilayer ν =2 Quantum Hall State (2007)
  • Author(s): A.Fukuda, S. Kozumi, D. Terasawa, N.Kumada, Y.Hirayama, Z. F. Ezawa and A.Sawada
  • Journal Title: AIP Conference Proceedings 893 Pages: 639-640
  • Peer Reviewed
• [Journal Article] Anisotropy of Current-pumped Nuclear Spin Polarization in the ν= 2/3 Quantum Hall State (2007)
  • Author(s): K. Iwata, M. Morino, A.Fukuda, A. Sawada, M. Suzuki, Z. F.Ezawa, N. Kumada and Y.Hirayama
  • Journal Title: AIPConference Proceedings 893 Pages: 643-644
  • Peer Reviewed
• [Journal Article] Anomalous Quantum Hall Resistance in Bilayer Counterflow Transport (2007)
  • Author(s): Z.F.Ezawa, S. Suzuki and G. Tsitsishvili
  • Journal Title: Physica Status Solidi (c) 4 Pages: 485-488
  • Peer Reviewed
• [Journal Article] Magnetotransport Study of the Canted Antiferromagnetic Phase in Bilayerν= 2 Quantum Hall State (2006)
  • Author(s): A. Fukuda, A.Sawada, S. Kozumi, D. Terasawa, Y.Shimoda, Z. F. Ezawa, N. Kumada and Y.Hirayama
  • Journal Title: Phys. Rev. B73 165304 Pages: 1-4
  • Peer Reviewed
• [Journal Article] Quantum Transport Study of a Canted Antiferromagnetic Phase in ν= 2 Bilayer Quantum Hall State (2006)
  • Author(s): A. Fukuda, S.Kozumi, D. Terasawa, Y. Shimoda, N.Kumada, Y. Hirayama, Z. F. Ezawa and A.Sawada
  • Journal Title: Physica E34 Pages: 77-80
  • Peer Reviewed
• [Journal Article] Stability of Soliton Lattice Phase in the ν= 1 Bilayer Quantum Hall State under Tilted Magnetic Fields (2006)
  • Author(s): D. Terasawa, A.Fukuda, S. Kozumia, A. Sawada, Z. F.Ezawa, N. Kumada and Y. Hirayama
  • Journal Title: Physica E34 Pages: 81-84
  • Peer Reviewed
• [Journal Article] Anisotropic magnetotransport near the ν=2/3 quantum Hall state (2006)
  • Author(s): M. Morino, K.Iwata, M. Suzuki, A. Fukuda, A. Sawada, Z.F. Ezawa, N. Kumada and Y. Hirayama
  • Journal Title: Physica E34 Pages: 152-155
  • Peer Reviewed
• [Journal Article] Magnetoresistance Peak in theν= 2Bilayer Quantum Hall State under Tilted Magnetic Field (2006)
  • Author(s): A. Fukuda, S. Kozumi, D.Terasawa, N. Kumada, Y. Hirayama, Z. F.Ezawa and A. Sawada
  • Journal Title: AIP Conference Proceedings 850 Pages: 1337-1338
  • Peer Reviewed
• [Journal Article] Anisotropic Behavior of Hysterestic Transport Phoenomena in the ν= 2/3 Quantum Hall State in the Tilted Magnetic Field (2006)
  • Author(s): K. Iwata, M. Morino, M. Suzuki, A.Fukuda, A. Sawada, Z. F. Ezawa, N.Kumada and Y. Hirayama
  • Journal Title: AIP Conference Proceedings 850 Pages: 1339-1340
  • Peer Reviewed
• [Journal Article] Anisotropic Magnetotransport near the Bilayer ν =2/3 Quantum Hall State (2006)
  • Author(s): M.Morino, K. Iwata, M. Suzuki, A. Fukuda, A.Sawada, Z. F. Ezawa, N. Kumada and Y.Hirayama
  • Journal Title: Y.Hirayama, AIP Conference Proceedings 850 Pages: 1335-1336
  • Peer Reviewed
• [Journal Article] Quantum transport study of canted antiferromagnetic phase in the v=2 bilayer quantum Hall state (2006)
  • Author(s): Fukuda A, Kozumi S, Terasawa D, Shimoda Y, Kumada N, Hiravama Y
  • Journal Title: PHYSICA E 34・(1-2) Pages: 77-80
• [Journal Article] Stability of soliton lattice phase in the v=1 bilayer quantum Hall state under tilted magnetic fields (2006)
  • Author(s): Terasawa D, Fukuda A, Kozumi S, Sawada A, Ezawa ZF, Kumada N
  • Journal Title: PHYSICA E 34・(1-2) Pages: 81-84
• [Journal Article] Anisotropic magneto transport near the v=2/3 quantum Hall state (2006)
  • Author(s): Morino M, Iwata K, Suzuki M, Fukuda A, Sawada A, Ezawa ZF
  • Journal Title: PHYSICA E 34・(1-2) Pages: 152-155
• [Journal Article] Magnetotransport study of the canted antiferromagnetic phase in bilayer nu=2 quantum Hall state (2006)
  • Author(s): Fukuda A, Sawada A, Kozumi S, Terasawa D, Shimoda Y, Ezawa ZF
  • Journal Title: PHYSICAL REVIEW B 73 (16) Pages: 165304-165304
• [Journal Article] Phase Diagram of the ν =2 Bilayer Quantum Hall State
  • Author(s): A. Fukuda, S.Kozumi, D. Terasawa, Y. Shimoda, N.Kumada, Y. Hirayama, Z. F. Ezawa and A.Sawada
  • Journal Title: proceedings of MS+S2006 印刷中
  • Peer Reviewed
• [Journal Article] Activation Study of the Pseudospin Soliton in the ν=1 Bilayer Quantum Hall Effect
  • Author(s): A. Fukuda, D. Terasawa, M. Morino,K. Iwata, S. Kozumi, T. Sekikawa, Y.Ogasawara, T. Arai, N. Kumada, Y.Hirayama, Z. F. Ezawa and A. Sawada
  • Journal Title: J. Phys. : Conference Series 印刷中
  • Peer Reviewed
• [Journal Article] Magnetotransport Study in the Layer Imbalanced ν= 1 Bilayer Quantum Hall State
  • Author(s): Y. Ogasawara, A. Fukuda, K. Iwata,T. Sekikawa, T.Arai, Y. Hirayama, Z. F.Ezawa and A. Sawada
  • Journal Title: J. Phys. : Conference Series 印刷中
  • Peer Reviewed
• [Presentation] 2 層系量子ホール状態における磁気抵抗のマイクロ波応答 (2008)
  • Author(s): 小笠原良晃, 福田昭, 津田是文, 岩田一樹, 新井敏一, 関川貴史, 熊田倫雄, 平山祥郎, 江澤潤一, 澤田安樹
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] 2層系量子ホール状態における磁気抵抗のマイクロ波応答 (2008)
  • Author(s): 小笠原良晃
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-20
• [Presentation] 電子密度差のある2 層系ν=1量子ホール状態における2 層独立化と磁気抵抗異常 (2008)
  • Author(s): 小笠原良晃, 福田昭, 岩田一樹, 関川貴史, 新井敏一, 江澤潤一, 熊田倫雄, 平山祥郎, 澤田安樹
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] 電子密度差のある2層系ν=1量子ホール状態における2層独立化と磁気抵抗異常 (2008)
  • Author(s): 小笠原良晃
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] ν=2/3 状態のスピン相転移点における核スピン緩和時間の面磁場方向依存性 (2007)
  • Author(s): 岩田一樹, 森野正行, 福田昭, 江澤潤一, 熊田倫雄, 平山祥郎, 澤田安樹
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 2 層系ν=1 量子ホール状態における磁気抵抗異常 (2007)
  • Author(s): 福田昭, 岩田一樹, 関川貴史, 小笠原良晃, 新井敏一, 熊田倫雄, 平山祥郎, 江澤潤一, 澤田安樹
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 2 層系ν=1/3 量子ホール状態における層間電子密度差に応じた活性化エネルギーの連続変化,関川貴史 (2007)
  • Author(s): 関川貴史, 福田昭, 岩田一樹, 新井敏一, 熊田倫雄, 平山祥郎, 江澤潤一, 澤田安樹
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21
• [Presentation] 2 層系ν=1/3 量子ホール状態における活性化エネルギーの電子密度差依存性 (2007)
  • Author(s): 福田昭, 岩田一樹, 関川貴史, 西中川良平, 新井敏一, 澤田安樹, 江澤潤一, 熊田倫雄, 平山祥郎
  • Organizer: 日本物理学会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-18
• [Presentation] 強面内磁場下での2 層系ν=3量子ホール状態におけるヒステリシス現象 (2007)
  • Author(s): 岩田一樹, 福田昭, 西中川良平, 関川貴史, 澤田安樹, 新井敏一, 江澤潤一, 熊田倫雄, 平山祥郎
  • Organizer: 日本物理学会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2007-03-18
• [Presentation] 2 層系ν=1/3 量子ホール状態 (2006)
  • Author(s): 福田昭, 岩田一樹, 関川貴史, 西中川良平, 新井敏一, 澤田安樹, 江澤潤一, 熊田倫雄, 平山祥郎
  • Organizer: 日本物理学会
  • Place of Presentation: 千葉大学
  • Year and Date: 2006-09-25
• [Presentation] μ=2/3量子ホール状態におけるドメイン構造の面内磁場依存性 (2006)
  • Author(s): 岩田一樹, 森野正行, 福田昭, 澤田安樹, 江澤潤一, 鈴木三千郎, 熊田倫雄, 平山祥郎
  • Organizer: 日本物理学会
  • Place of Presentation: 千葉大学
  • Year and Date: 2006-09-25
• [Book] Quantum Hall Effects : Field Theoretical Approach and Related Topics, Revised 2nd Edition
  • Author(s): Z.F. Ezawa
  • Total Pages: 740
  • Publisher: World Scientific
• [Remarks]
  • URL: http://www.ltm.kyoto-u.ac.jp/teijigen/