Updated on 2025/07/12

写真a

 
TANAKA, Yukio
 
Organization
Graduate School of Engineering Applied Physics 1 Professor
Graduate School
Graduate School of Engineering
Undergraduate School
School of Engineering Physical Science and Engineering
Title
Professor

Degree 1

  1. 理学博士 ( 1990.3   東京大学 ) 

Research Interests 5

  1. mechanism)Low dimensional systems

  2. symmetry

  3. Condensed matter theoryphysics of superconductivity(junctions

  4. 凝縮系におけるトポロジカル量子現象の理論

  5. トポロジカル物質 (トポロジカル絶縁体 量子ホール系など)

Research Areas 1

  1. Others / Others  / Solid State Physics

Current Research Project and SDGs 6

  1. 超伝導接合の物理

  2. A microscopic theory of tunneling effect and proximity effect in superconductors

  3. Superconductivity in strongly correlated system

  4. トポロジカル絶縁体の理論

  5. 巨視的量子トンネル効果の理論

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Education 2

  1. The University of Tokyo   Graduate School, Division of Natural Science

    - 1990

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    Country: Japan

  2. The University of Tokyo   Faculty of Science

    - 1985

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    Country: Japan

Professional Memberships 1

  1. 日本物理学会

Awards 6

  1. 第14回 日本IBM科学賞

    2000.12   日本IBM   異方的超伝導体におけるトンネル現象の研究

    柏谷聡 田仲由喜夫

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    Award type:Award from publisher, newspaper, foundation, etc.  Country:Japan

  2. 科学技術分野の文部科学大臣表彰 科学技術賞

    2020.4   文部科学省   非従来型超伝導体の界面現象の研究

    田仲由喜夫, 柏谷聡

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    Country:Japan

  3. 第9回超伝導科学技術賞

    2005  

    田仲由喜夫 柏谷聡

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    Country:Japan

  4. JPSJ Outstanding Referee

    2025.3   Journal of the Physical Society of Japan  

    Yukio Tanaka

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    Country:Japan

  5. JPSJ Papers of Editor's Choice

    2024.10   Journal of the Physical Society of Japan   Theory of Tunneling Spectroscopy in Unconventional p-Wave Magnet-Superconductor Hybrid Structures

    Kazuki Maeda, Bo Lu, Keiji Yada, Yukio Tanaka

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    Award type:Honored in official journal of a scientific society, scientific journal  Country:Japan

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Papers 580

  1. Symmetry and Topology in Superconductors, odd-frequency pairing and edge states Invited Reviewed

    Y. Tanaka, M. Sato and N.Nagaosa

    Journal of the Physical Society of Japan   Vol. 81 ( 1 ) page: 011013_1-34   2012

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    Superconductivity is a phenomenon where the macroscopic quantum coherence appears due to the pairing of electrons. This offers a fascinating arena to study the physics of symmetry breaking, i.e., broken gauge symmetry. However, the important symmetries in superconductors are not only the gauge invariance. Especially, the symmetry properties of the pairing, i.e., the parity and spin-singlet/spin-triplet, determine the physical properties of the superconducting state. Recently it has been recognized that there is the important third symmetry of the pair amplitude, i.e., even or odd parity with respect to the frequency. The conventional uniform superconducting states correspond to the even-frequency pairing, but the recent finding is that the odd-frequency pair amplitude arises in the spatially non-uniform situation quite ubiquitously. Especially, this is the case in the Andreev bound state (ABS) appearing at the surface/interface of the sample. The other important recent development is on the nontrivial topological aspects of superconductors. As the band insulators are classified by topological indices into (i) conventional insulator, (ii) quantum Hall insulator, and (iii) topological insulator, also are the gapped superconductors. The influence of the nontrivial topology of the bulk states appears as the edge or surface of the sample, i.e., bulk-edge correspondence. In the superconductors, this leads to the formation of zero energy ABS (ZEABS). Therefore, the ABSs at the surface/interface of the superconductors are the place where the symmetry and topology meet each other which offer the stage of rich physics. In this review, we discuss the physics of ABS from the viewpoint of the odd-frequency pairing, the topological bulk-edge correspondence, and the interplay of these two issues. It is described how the symmetry of the pairing and topological indices determine the absence/presence of the ZEABS, its energy dispersion, and properties as the Majorana fermions. Various related issues such as the Helium 3, transport of Majorana fermions, and tunneling spectroscopies are also briefly discussed.

    DOI: 10.1143/JPSJ.81.011013

    Web of Science

  2. Theory of Majorana Zero Modes in Unconventional Superconductors Invited Reviewed International coauthorship

    Progress of Theoretical and Experimental Physics   Vol. 8   page: 08C105_1 - 08C105_90   2024.5

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1093/ptep/ptae065

  3. Topology of Andreev bound states with flat dispersion Reviewed

    M. Sato, Y. Tanaka, K. Yada and T. Yokoyama

    Physical Review B   Vol. 83 ( 22 ) page: 224511_1-22   2011

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    Language:English   Publishing type:Research paper (scientific journal)  

    Theory of dispersionless Andreev bound states on surfaces of time-reversal-invariant unconventional superconductors is presented. The generalized criterion for the dispersionless Andreev bound state is derived from the bulk-edge correspondence, and the chiral spin structure of the dispersionless Andreev bound states is argued from which the Andreev bound state is stabilized. We then summarize the criterion in a form of index theorems. The index theorems are proved in a general framework to certify the bulk-edge correspondence. As concrete examples, we discuss the (i) d xy -wave superconductor, (ii) p x -wave superconductor, and (iii) noncentrosymmetric superconductors. In the last example, we find a peculiar time-reversal-invariant Majorana fermion. The time-reversal-invariant Majorana fermion shows an unusual response to the Zeeman magnetic field, which can be used to identify it experimentally.

    DOI: 10.1103/PhysRevB.83.224511

  4. Manipulation of Majorana fermion, Andreev reflection and Josephson current on topological insulators Reviewed

    Y. Tanaka, T. Yokoyama and N. Nagaosa.

    Physical Review Letters   Vol. 103   page: 107002_1-4   2009

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)  

  5. Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets Invited Reviewed

    Yuri Fukaya, Kazuki Maeda, Keiji Yada, Jorge Cayao, Yukio Tanaka, and Bo Lu

    PHYSICAL REVIEW B   Vol. 111   page: 064502_1 - 064502_15   2025.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: DOI: 10.1103/PhysRevB.111.064502

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Books 19

  1. 超伝導接合の物理

    田仲由喜夫( Role: Sole author ,  単著)

    名古屋大学出版会  2021.8 

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    Total pages:344   Language:Japanese Book type:Scholarly book

  2. Magneto tunneling spectroscopy of unconventional superconductors,

    Y. Tanaka, Y. Tanuma, K. Kuroki and S. Kashiwaya.( Role: Joint author)

    Nova Science Publishers  2003 

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    Language:English

  3. Theory of Josephson effect in d-wave superconductor junctions, Physics and Applications of Mesoscopic Josephson Junctions

    Y. Tanaka and S. Kashiwaya.( Role: Joint author)

    Journal of Physical Society of Japan  1999 

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    Language:English

  4. 超伝導d波状態とトンネル効果,ジョセフソン効果, 高温超伝導の科学

    田仲由喜夫( Role: Joint author)

    裳華房, 立木昌,藤田敏三 編集  1999 

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    Language:Japanese

  5. A. C. Josephson current in d-wave superconductor junctions

    Advances in superconductivity  1999 

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    Language:English

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Presentations 58

  1. Odd-frequency pairing in topological superconductors Invited International conference

    Yukio Tanaka

    Topological Superconductivity in Quantum Materials, On-line Workshop  2020.10.22 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (invited, special)  

  2. The physics of Andreev bound states in superconductor junctions Invited International conference

    Yukio Tanaka

    Summer school. Hybrid Structures for Spintronics and Qubits  2020.10.23 

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    Event date: 2020.10

    Language:English   Presentation type:Oral presentation (keynote)  

    Country:Netherlands  

  3. 有限の長さのKitaev鎖モデルのGreen関数と輸送現象の理論

    田仲由喜夫, Jorge Cayao, 田村駿

    日本物理学会2024年年会  2025.9.18  日本物理学会

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    Event date: 2025.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:北海道大学   Country:Japan  

  4. Theory of full counting statistics in unconventional superconductor junctions Invited

    Yukio Tanaka

    Condensed matter seminar Department of Physics Princeton University  2025.3.25  Princeton University (condensed matter group)

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    Event date: 2025.3

    Language:English   Presentation type:Oral presentation (invited, special)  

    Venue:Princeton University   Country:United States  

  5. 非従来型超伝導体接合の完全計数統計の理論  International coauthorship

    田仲由喜夫 Tim Kokkeler

    日本物理学会2025年春季大会  2025.3.20  日本物理学会

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    Event date: 2025.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:on-line開催   Country:Japan  

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Research Project for Joint Research, Competitive Funding, etc. 1

  1. 強磁性体超伝導体接合の輸送特性に関する理論解析

    2006.10 - 2007.3

    企業からの受託研究 

KAKENHI (Grants-in-Aid for Scientific Research) 17

  1. スピン三重項トポロジカル超伝導体におけるマヨラナ粒子状態の検出

    Grant number:25H00609  2025.4 - 2030.3

    科学研究費助成事業  基盤研究(A)

    藤本 聡, 田仲 由喜夫, 水島 健, 北川 俊作, 石田 憲二

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    Authorship:Coinvestigator(s) 

    本研究は、誤り耐性のある量子計算への応用が強く期待されているトポロジカル超伝導体のマヨラナ表面状態を磁気的に検出することを目的とする。マヨラナ状態は誤り耐性のある量子ビットとして期待されているものの、その存在が未だ実験的に確立していない。本研究は理論グループと実験グループとの連携によって、この難題に挑むものである。マヨラナ状態は超伝導体試料の表面付近の限られた小さい領域に現れるため、その信号は弱く捉えるのが難しいとされてきた。この問題を克服するために表面に金属を蒸着し、金属領域に近接効果によって染み出したマヨラナ状態を磁気的実験手法で検出することを目指す。

  2. Theory of flat band superconductor in twistronics

    Grant number:25K07203  2025.4 - 2029.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

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    Authorship:Coinvestigator(s) 

  3. Anyons at superconducting junctions involving quasiparticle excitations with fractional charges

    Grant number:25H00613  2025.4 - 2028.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

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    Authorship:Coinvestigator(s) 

  4. Phase sensitive detection and non-local measurements of time-reversal symmetry broken superconductors

    Grant number:24K00556  2024.4 - 2028.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

  5. Higher-order relativistic corrections to strongly correlated electron systems

    Grant number:24K00578  2024.4 - 2028.3

    Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship:Coinvestigator(s) 

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Industrial property rights 1

  1. トンネル接合超伝導素子、磁気センサ、メモリ及びスイッチング素子

    柏谷聡(産総研)田仲 由喜夫(名古屋大学)

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    Applicant:産業技術総合研究所

    Application no:特願2000- 86  Date applied:2000.1

    Country of applicant:Domestic  

 

Teaching Experience (On-campus) 24

  1. 卒業研究B

    2024

  2. 卒業研究A

    2024

  3. 物理工学セミナー1B

    2021

  4. Advanced Solid state Physics

    2021

  5. 卒業研究B

    2021

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Teaching Experience (Off-campus) 3

  1. 特別講義「超伝導接合の物理」

    2023.10 The University of Tokyo)

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    Level:Postgraduate  Country:Japan

  2. 特別講義「超伝導接合の物理」

    2023.12 Kyushu University)

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    Level:Postgraduate  Country:Japan

  3. 特別講義

    2024.7 Tohoku University)

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    Level:Postgraduate  Country:Japan

 

Social Contribution 3

  1. 創発量子現象のフロンティア:超伝導接合、エッジ伝導、エニオン

    Role(s):Presenter, Organizing member

    京都大学基礎物理学研究所  創発量子現象のフロンティア:超伝導接合、エッジ伝導、エニオン  2024.5

  2. 日本物理学会名古屋支部支部委員長

    Role(s):Planner

    日本物理学会  2022.4 - 2024.3

  3. Journal of the Physical Society of Japan (Editor)

    Role(s):Editer

    2021.4