Topological Thermal Responses of Quantum Condensed Matter Systems

2013 Fiscal Year Final Research Report

• Project/Area Number: 24740211
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Tohoku University
• Principal Investigator: NOMURA Kentaro 東北大学, 金属材料研究所, 准教授 (00455776)
• Project Period (FY): 2012-04-01 – 2014-03-31
• Keywords: トポロジカル絶縁体 / トポロジカル超伝導体 / 熱伝導

Research Abstract

We have performed theoretical studies of thermal responses of topological insulators and topological superconductors. On the surface of topological superconductors Majorana quasiparticle excitations are realized. We have clarified the thermal transport by computing the density of states and the thermal conductivities using the self-consistend Born approximation. Basing on the field theoretical approaches, we have studied the cross-correlated responses between thermal gradients and mechanical rotation. The interaction effects of electrons in topological insulators were studied using the lattice gauge theory.

Research Products

• [Journal Article] Disorder effects on thermal transport on the surface of topological superconductors by the self-consistent Born approximation (2014)
  • Author(s): R. Nakai, K. Nomura
  • Journal Title: Phys. Rev. B Volume: 89 Pages: 064503-1-9
  • Peer Reviewed
• [Journal Article] Electromagnetic and thermal responses in topological matter : topological terms, quantum anomalies and D-branes (2013)
  • Author(s): A. Furusaki, N. Nagaosa, K. Nomura, S. Ryu, T. Takayanagi
  • Journal Title: Comptes Rendus Physique Volume: 14 Pages: 871-883
  • Peer Reviewed
• [Journal Article] Zeeman-type spin splitting controlled by an electric field (2013)
  • Author(s): H. Yuan, M. S. Baharamy, K. Morimoto, S. Wu, K. Nomura, B.-J. Yang, H. Shimotani, R. Suzuki, M. Toh, C. Kloc, X. Xu R. Arita, N. Nagaosa, Y, Iwasa
  • Journal Title: Nature Physics Volume: 9 Pages: 563-569
  • Peer Reviewed
• [Journal Article] Criticality of the metal–topological insulator transition driven by disorder (2013)
  • Author(s): A. Yamakage, K. Nomura, K.-I. Imura, Y. Kuramoto
  • Journal Title: Phys. Rev. B Volume: 87 Pages: 205141–1-11
  • Peer Reviewed
• [Journal Article] Strong Coupling Expansion in a Correlated Three-Dimensional Topological Insulator (2013)
  • Author(s): A. Sekine, T. Z. Nakano, Y. Araki, K. Nomura
  • Journal Title: Phys. Rev. B Volume: 87 Pages: 165142–1-9
  • Peer Reviewed
• [Journal Article] Electron Correlation Induced Spontaneous Symmetry Breaking and Weyl Semimetal Phase in a Strongly Spin-Orbit Coupled System (2013)
  • Author(s): A. Sekine, K. Nomura
  • Journal Title: J. Phys. Soc. Jpn. Volume: 82 Pages: 033702–1-4
  • Peer Reviewed
• [Journal Article] Quasi-Particle Tunneling in Anti-Pfaffian Quantum Hall State (2012)
  • Author(s): T. Ito, K. Nomura, N. Shibata
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Pages: 083705–1-4
  • Peer Reviewed
• [Journal Article] Disorder-induced quantum phase transitions in three-dimensional topological insulators and superconductors (2012)
  • Author(s): S. Ryu, K. Nomura
  • Journal Title: Phys. Rev. B Volume: 85 Pages: 155138–1-18
  • Peer Reviewed
• [Journal Article] Tunable Spin–Orbit Interaction in Trilayer Graphene Exemplified in Electric-Double-Layer Transistors (2012)
  • Author(s): Z. Chen, H. Yuan, Y. Zhang, K. Nomura, T. Gao, Y. Gao, H. Shimotani, Z. Liu, Y. Iwasa
  • Journal Title: Nano Lett. Volume: 12 Pages: 2212-2216
  • Peer Reviewed
• [Journal Article] Quantum Phase Transitions Induced by the Spin–Orbit Interaction in the N = 1 Landau Level (2012)
  • Author(s): T. Ito, K. Nomura, N. Shibata
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Pages: 058002–1-7
  • Peer Reviewed
• [Presentation] Thermal current induced orbital angular momentum in topological states (2014)
  • Author(s): Kentaro Nomura
  • Organizer: 14th REIMEI Workshop on Spin Currents and Related Phenomena
  • Place of Presentation: Institut Laue-Langevin
  • Year and Date: 20140210-13
  • Invited
• [Presentation] ゼロギャップ半導体におけるワイル半金属相とスピン物性 (2014)
  • Author(s): 野村健太郎
  • Organizer: 日本物理学会年次大会領域4チュートリアル講演
  • Place of Presentation: 東海大学
  • Year and Date: 2014-03-28
  • Invited
• [Presentation] Quantum Cross-Correlated Responses of Topological Matters (2013)
  • Author(s): Kentaro Nomura
  • Organizer: International Workshop for Young Researchers on Topological Quantum Phenomena in Condensed Matter with Broken Symmetries
  • Place of Presentation: Ginowan City, Okinawa, Japan
  • Year and Date: 20131023-26
  • Invited
• [Presentation] Electromagnetic and thermal responses in topological insulators and superconductors (2013)
  • Author(s): Kentaro Nomura
  • Organizer: 7^<th> ISSP International Workshop and Symposium Emergent Quantum Phases in Condensed Matter
  • Place of Presentation: ISSP The University of Tokyo, Kashiwa, Japan
  • Year and Date: 20130612-14
  • Invited
• [Presentation] Thermally induced mechanical motion of topological insulators and superconductors (2013)
  • Author(s): Kentaro Nomura
  • Organizer: 8^<th> ASRC International Workshop on Spin Mechanics
  • Place of Presentation: Tokai, Japan
  • Year and Date: 20130224-26
  • Invited
• [Presentation] トポロジカル絶縁体・超伝導体 : 概論 (2012)
  • Author(s): 野村健太郎
  • Organizer: 日本物理学会秋季大会領域4,領域6,領域8,領域9合同シンポジウム主題:トポロジカル絶縁体・超伝導体研究の最近の進展と今後の展望
  • Place of Presentation: 横浜国立大学
  • Year and Date: 2012-09-18
  • Invited
• [Book] Physics of Graphene (2014)
  • Author(s): H. Aoki and M. S. Dresselhaus
  • Total Pages: 350 (Chapter 9, Symmetry Breaking in Graphene's Quantum Hall Regime : The Competition Between Interactions and Disorder, Y. Barlas, A.H. MacDonald, and K. Nomura, Page 301-326)
  • Publisher: Springer