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Theoretical studies of control of quantum vibrational modes in nano-scale molecular resonators

Research Project

Project/Area Number 24710111
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nanostructural science
Research InstitutionUniversity of Tsukuba

Principal Investigator

UEDA Akiko  筑波大学, 数理物質系, 助教 (70453537)

Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords分子接合 / 共振器 / フォノン / トポロジカル超伝導体 / ケルディッシュグリーン関数法 / 電気伝導 / 有機半導体 / 量子ドット / アハラノフ・ボームリング / マヨラナフェルミオン / グラフェン / アハラノフ・ボーム振動 / 単分子接合 / 有機分子 / 電子格子相互作用 / NEMS / 量子制御
Outline of Final Research Achievements

We have performed fundamental studies for realizing nano-scale resonators which induce quantum vibrational modes. We have considered a simple model describing the nano-scale resonator and have calculated the transport properties using the Keldysh Green function methods. We have found that the number and states of the vibrational mode are controlled by the dc and ac, and gate voltage. We have also studied a molecule attached to a topological superconductor, which are expected to induce the quantum vibrational mode. We have revealed the anomalous features of conductance emerged at the zero bias voltage.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (15 results)

All 2015 2014 2013 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Acknowledgement Compliant: 3 results,  Open Access: 1 results) Presentation (10 results) (of which Invited: 2 results)

  • [Journal Article] Anomalous interference in Aharonov-Bohm rings with two Majorana bound states2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Journal Title

      Physical Review B

      Volume: 90 Issue: 8 Pages: 081405-081405

    • DOI

      10.1103/physrevb.90.081405

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Conductance and Fano factor in normal/ferromagnetic/normal bilayer graphene junction2014

    • Author(s)
      Z. Rashidian, F. M. Mojarabian, P. Bayati, G. Rashedi, A. Ueda and T. Yokoyama
    • Journal Title

      Journal of Physics: Condensed Matter

      Volume: 26 Issue: 25 Pages: 255302-255302

    • DOI

      10.1088/0953-8984/26/25/255302

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Interferometry through a Quantum Dot Coupled to Majorana Fermions2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Journal Title

      Physics Procedia

      Volume: 58 Pages: 182-186

    • DOI

      10.1016/j.phpro.2014.09.045

    • Related Report
      2014 Annual Research Report
    • Open Access / Acknowledgement Compliant
  • [Journal Article] Transport Through Quantum Dot-Majorana Junctions2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Journal Title

      JPS Conference Proceedings

      Volume: 1

    • DOI

      10.7566/jpscp.1.012028

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Full-counting statistics for molecular junctions: Fluctuation theorem and singularities2013

    • Author(s)
      Y. Utsumi, O. Entin-Wohlman, A. Ueda, A. Aharony
    • Journal Title

      Physical Review B

      Volume: 87 Issue: 11

    • DOI

      10.1103/physrevb.87.115407

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] 量子ドット/超伝導体接合における超伝導対称性2015

    • Author(s)
      植田暁子、横山毅人
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] Aharonov-Bohm interferometry coupled to a BDI class topological superconductor2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Organizer
      32nd International Conference on the Physics of Semiconductor
    • Place of Presentation
      Austin, USA
    • Year and Date
      2014-08-10 – 2014-08-15
    • Related Report
      2014 Annual Research Report
  • [Presentation] Quantum dots Coupling to Topological Superconductors2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Organizer
      Collaborative Conference on Materials Research
    • Place of Presentation
      Incheon, Korea
    • Year and Date
      2014-06-23 – 2014-06-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Quantum dots coupling to Topological superconductors2014

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Organizer
      Collaborative conference on Materials Research
    • Place of Presentation
      Seoul, Korea
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Transport Through Quantum Dot-Majorana Junctions2013

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Organizer
      12th Asia Pacific Physics Conference
    • Place of Presentation
      Chiba
    • Related Report
      2013 Research-status Report
  • [Presentation] Interferometry through a quantum dot coupled to Majorana fermions2013

    • Author(s)
      Akiko Ueda and Takehito Yokoyama
    • Organizer
      26th International Symposium on Superconductivity
    • Place of Presentation
      Tokyo
    • Related Report
      2013 Research-status Report
  • [Presentation] マヨラナ・量子ドット接合系における電気伝導特性2013

    • Author(s)
      植田暁子、横山毅人
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Research-status Report
  • [Presentation] Nonlinear Vibrational Effect on the AC Conductance of Molecular Junctions

    • Author(s)
      Akiko Ueda
    • Organizer
      31st International Conference on the Physics of Semiconductors
    • Place of Presentation
      ETH, Switzerland
    • Related Report
      2012 Research-status Report
  • [Presentation] 分子接合における非平衡フォノン分布とACコンダクタンス

    • Author(s)
      植田暁子、内海裕洋、Ora Entin-Wohlman、Amnon Aharony
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 分子接合の完全計数統計における特異点分布と揺らぎの定理

    • Author(s)
      内海裕洋、Ora Entin-Wohlman、植田暁子、Amnon Aharony
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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