Study on average current and current fluctuation in mesoscopic Quantum transport

• Project/Area Number: 21740288
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: The University of Tokyo
• Principal Investigator: SAITO Keiji The University of Tokyo, 大学院・理学系研究科, 助教 (90312983)
• Project Period (FY): 2009 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 非平衡 / 非線形物理学 / 非平衡統計力学 / 輸送現象 / 熱伝導現象 / 非平衡熱力学 / 熱伝導 / 電気伝導

Research Abstract

We theoretically studied dimensional crossover of heat conduction phenomena in Fermi-Pasta-Ulam lattices. We also studied current fluctuations in quantum charge transport. We found nontrivial relationships among nonlinear transport coefficients and demonstrated them experimentally.

Research Products

• [Journal Article] Linear response formula for finite frequency thermal conductance of open systems (2011)
  • Author(s): Abhishek Dhar, Onuttom Narayan, Anupam Kundu, Keiji Saito
  • Journal Title: Phys.Rev.E vol.83 Pages: 11101-11101
  • Peer Reviewed
• [Journal Article] Linear response formula for finite frequency thermal conductance of open systems (2011)
  • Author(s): Abhishek Dhar, Keiji Saito, et al.
  • Journal Title: Phys.Rev.E Volume: 83
  • Peer Reviewed
• [Journal Article] Chaotic Transport in the Symmetry Crossover regime with Spin-Orbit interaction (2010)
  • Author(s): Keiji Saito, Taro Nagao
  • Journal Title: Phys.Rev.B vol.82 Pages: 125322-125322
  • Peer Reviewed
• [Journal Article] Non-equilibrium Fluctuation Relation in a Quantum Coherent Conductor (2010)
  • Author(s): S.Nakamura, Y.Yamauchi, M.Hashisaka, K.Chida, K.Kobayashi, T.Ono, R.Leturcq, K.Ensslin, Keiji Saito, Y.Utsumi, A.C.Gossard
  • Journal Title: Phys.Rev.Lett. vol.104 Pages: 80602-80602
  • Peer Reviewed
• [Journal Article] Bidirectional Single-Electron Counting and the Fluctuation Theorem (2010)
  • Author(s): Y.Utsumi, DS.Golubev, M.Marthaler, Keiji Saito, T.Fujisawa, Gerd Schon
  • Journal Title: Phys.Rev.B vol.81 Pages: 125331-125331
  • Peer Reviewed
• [Journal Article] Heat conduction in a three dimensional anharmonic crystal (2010)
  • Author(s): Keiji Saito, Abhishek Dhar
  • Journal Title: Phys.Rev.Lett. vol.104 Pages: 40601-40601
  • Peer Reviewed
• [Journal Article] Heat conduction in a three dimensional anharmonic crystal (2010)
  • Author(s): Keiji Saito
  • Journal Title: Phys.Rev.Lett. Volume: 104
  • Peer Reviewed
• [Journal Article] Non-equilibrium Fluctuation Relation in a Quantum Coherent Conductor (2010)
  • Author(s): S.Nakamura, Keiji Saito, et al.
  • Journal Title: Phys.Rev.Lett. Volume: 104
  • Peer Reviewed
• [Journal Article] Bidirectional Single-Electron Counting and the Fluctuation Theorem (2010)
  • Author(s): Y.Utsumi, DS.Golubev, M.Marthaler, K.Saito, T.Fujisawa, Gerd Schon
  • Journal Title: Phys.Rev.B 81 Pages: 80602-80606
  • Peer Reviewed
• [Journal Article] Heat conduction in a three dimensional anharmonic crystal (2010)
  • Author(s): Keiji Saito, Abhishek Dhar
  • Journal Title: Phys.Rev.Lett. 104 Pages: 40601-40604
  • Peer Reviewed
• [Journal Article] Nonequilibrium Fluctuation Relation in Quantum Conductors (2010)
  • Author(s): S.Nakamura, Y.Yamauchi, M.Hashisaka, K.Chida, K.Kobayashi, T.Ono, R.Leturcq, K.Ensslin, Keiji Saito, Y.Utsumi, A.C.Gossard
  • Journal Title: Phys.Rev.Lett. 104 Pages: 115427-115430
  • Peer Reviewed
• [Journal Article] Semiclassical Theory for Universality in Quantum Chaos with Symmetry Crossover (2009)
  • Author(s): Keiji Saito, Taro Nagao, Sebastian Muller, Petr Braun
  • Journal Title: Journal of Phys.A : Math.Theor. vol.42 Pages: 495101-495101
  • Peer Reviewed
• [Journal Article] Cooling mechanisms in molecular conduction junctions (2009)
  • Author(s): Michael Galperin, Keiji Saito, Alexander V.Balatsky, Abraham Nitzan
  • Journal Title: Phys.Rev.B vol.80 Pages: 115427-115427
  • Peer Reviewed
• [Journal Article] Fluctuation Theorem in a Quantum-Dot Aharonov-Bohm Interferometer (2009)
  • Author(s): Yasuhiro Utsumi, Keiji Saito
  • Journal Title: Phys.Rev.B vol.79 Pages: 235311-235311
  • Peer Reviewed
• [Journal Article] Fluctuation Theorem in a Quantum-Dot Aharonov-Bohm Interferometer (2009)
  • Author(s): Yasuhiro Utsumi, Keiji Saito
  • Journal Title: Phys.Rev.B 79 Pages: 235311-235319
  • Peer Reviewed
• [Journal Article] Cooling mechanisms in molecular conduction junctions (2009)
  • Author(s): Michael Galperin, Keiji Saito, Alexander V.Balatsky, Abraham Nitzan
  • Journal Title: Phys.Rev.B 80 Pages: 115427-115438
  • Peer Reviewed
• [Journal Article] Semiclassical Theory for Universality in Quantum Chaos with Symmetry Crossover (2009)
  • Author(s): Keiji Saito, Taro Nagao, Sebastian Muller, Petr Braun
  • Journal Title: Journal of Phys.A : Math.Theor. 42 Pages: 495101-495122
  • Peer Reviewed
• [Presentation] Generating Function Formula of Heat Transfer in Harmonic Networks (2011)
  • Author(s): 齊藤圭司
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] Generating Function Formula of Heat Transfer in Harmonic Networks (2011)
  • Author(s): 齊藤圭司
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 新潟大学
  • Year and Date: 2011-03-26
• [Presentation] 3次元FPU格子の熱伝導 (2009)
  • Author(s): 齊藤圭司
  • Organizer: 日本物理学会秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] 3次元FPU格子の熱伝導 (2009)
  • Author(s): 齊藤圭司
  • Organizer: 日本物理学会 2009秋季大会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25