Study on average current and current fluctuation in mesoscopic Quantum transport

2010 Fiscal Year Final Research Report

• 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
• Keywords: 非平衡 / 非線形物理学

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: 011101
  • 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
  • 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: 080602
  • 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
  • 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: 040601
  • 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
  • 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
  • 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
  • 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] 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