Superconductivity and quantum transport phenomena in Jahn-Teller crystals

• Project/Area Number: 24540379
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: HOTTA Takashi 首都大学東京, 理工学研究科, 教授 (00262163)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: ヤーンテラーフォノン / 近藤効果 / ラットリング / バイブロニック状態 / 磁性 / 軌道自由度 / 超伝導 / フェルミ面

Outline of Final Research Achievements

We have analyzed the superconducting transition temperature Tc in the two-dimensional orbital-degenerate electron systems coupled with Jahn-Teller oscillations. We have found that Tc is increased for the case of disconnected Fermi-surface structure, since Cooper-pair hopping between different Fermi surfaces is enhanced by the Jahn-Teller oscillation.
We have analyzed the Anderson model coupled with anharmonic Jahn-Teller oscillations by using a numerical renormalization group technique. We have found that the Kondo phenomenon occurs due to the screening of rotational phonon mode with clockwise and anti-clockwise directions by orbital momenta of conduction electrons.
We have discovered chaos in the energy spectrum of anharmonic Jahn-Teller oscillation. We have pointed out that chaos appears as an anomalous peak in the temperature dependence of specific heat. We have proposed that such a peak can be detected in the experiments on cage-structure materials.

Research Products

• [Journal Article] Relation between electron mass enhancement and potential shape: Numerical analysis of two-site anharmonic Holstein-Hubbard model (2015)
  • Author(s): Tomoya Matsuura and Takashi Hotta
  • Journal Title: J. Phys.: Conf. Ser. Volume: 592 Pages: 012144-012144
  • DOI: 10.1088/1742-6596/592/1/012144
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Chaos in Jahn-Teller Rattling (2014)
  • Author(s): Takashi Hotta and Akira Shudo
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 8 Pages: 087051-5
  • DOI: 10.7566/jpsj.83.083705
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Kondo Effect oJahn-Teller Ion Vibrating in a Cubic Anharmonic Potential (2014)
  • Author(s): Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 10 Pages: 104706-104706
  • DOI: 10.7566/jpsj.83.104706
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Effect of phonon-mediated attraction on the Kondo phenomenon emerging from a vibrating magnetic ion (2014)
  • Author(s): Takahiro Fuse and Takashi Hotta
  • Journal Title: JPS Conf. Proc. Volume: 3
  • DOI: 10.7566/jpscp.3.016024
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Key role of hybridization between actinide 5f and oxygen 2p orbitals for electronic structure of actinide dioxides (2013)
  • Author(s): Yu Hasegawa, Takahiro Maehira and Takashi Hotta
  • Journal Title: J. Mod. Phys. Volume: 4 Issue: 12 Pages: 1574-1582
  • DOI: 10.4236/jmp.2013.412194
  • Peer Reviewed
• [Journal Article] Kondo effect emerging from a spin-vibronic state (2013)
  • Author(s): Takahiro Fuse and Takashi Hotta
  • Journal Title: J. Phys.: Conf. Ser. Volume: 428 Pages: 12013-12013
  • DOI: 10.1088/1742-6596/428/1/012013
  • Peer Reviewed
• [Journal Article] Fermi-Surface Topology and Superconductivity Induced by Jahn-Teller Phonons (2013)
  • Author(s): Yuji Shiba and Takashi Hotta
  • Journal Title: J. Phys.: Conf. Ser. Volume: 428 Pages: 12038-12038
  • DOI: 10.1088/1742-6596/428/1/012038
  • Peer Reviewed
• [Journal Article] Electric Dipolar Susceptibility of the Anderson-Holstein Model (2013)
  • Author(s): Takahiro Fuse and Takashi Hotta
  • Journal Title: J. Korean Phys. Soc. Volume: 62 Pages: 1874-1874
  • Peer Reviewed
• [Journal Article] Quadrupole Susceptibility of Gd-Based Filled Skutterudite Compounds (2012)
  • Author(s): Fumiaki Niikura and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Issue: 11 Pages: 114720-114720
  • DOI: 10.1143/jpsj.81.114720
  • NAID: 210000109800
  • Peer Reviewed
• [Journal Article] Electric Dipolar Kondo Effect Emerging from a Vibrating Magnetic Ion (2012)
  • Author(s): T. Hotta and K. Ueda
  • Journal Title: Phys. Rev. Lett Volume: 108 Issue: 24
  • DOI: 10.1103/physrevlett.108.247214
  • Peer Reviewed
• [Journal Article] Anomalous Isotope Effect in Rattling-Induced Superconductor (2012)
  • Author(s): Kunihiro Oshiba and Takashi Hotta
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Issue: 11 Pages: 114711-114711
  • DOI: 10.1143/jpsj.81.114711
  • NAID: 40019484521
  • Peer Reviewed
• [Journal Article] Microscopic theory of multipole ordering in f-electron systems (2012)
  • Author(s): Takashi Hotta
  • Journal Title: Physics Research International Volume: 2012 Pages: 1-9
  • DOI: 10.1155/2012/762798
  • Peer Reviewed
• [Presentation] Fermi-Surface Topology and Pairing Symmetry in BiS2-Based Layered Superconductors (2015)
  • Author(s): Takashi Hotta
  • Organizer: International Conference on Magnetism 2015
  • Place of Presentation: バルセロナ、スペイン
  • Year and Date: 2015-07-05 – 2015-07-10
• [Presentation] Key Role of Rutile Structure for Layered Magnetism in Chromium Compounds (2015)
  • Author(s): Yasuhiro Kondo and Takashi Hotta
  • Organizer: International Conference on Magnetism 2015
  • Place of Presentation: バルセロナ、スペイン
  • Year and Date: 2015-07-05 – 2015-07-10
• [Presentation] Quantum Interference of Surface-Induced Friedel Oscillations Enhanced by Fermi-Surface Nesting in Layered Manganites (2015)
  • Author(s): Ryosuke Yamamura and Takashi Hotta
  • Organizer: International Conference on Magnetism 2015
  • Place of Presentation: バルセロナ、スペイン
  • Year and Date: 2015-07-05 – 2015-07-10
• [Presentation] TiO2型歪みによるクロム化合物の層状磁気構造の安定化 (2015)
  • Author(s): 近藤泰弘・堀田貴嗣
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学早稲田キャンパス、東京
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] 層状マンガン酸化物における表面によって誘起された２つのフリーデル振動の干渉現象 (2015)
  • Author(s): 山村諒祐・堀田貴嗣
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学早稲田キャンパス、東京
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] BiS2系層状超伝導体の乱雑位相近似による超伝導転移温度の計算 (2015)
  • Author(s): 我妻友明・堀田貴嗣
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学早稲田キャンパス、東京
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Ryosuke Yamamura and Takashi Hotta (2015)
  • Author(s): Valence Imbalance of Manganese Ions between Surface and Bulk due to Quantum Interference of Friedel Oscillations in Layered Manganites
  • Organizer: TMU International Symposium on "The Global Human Resource Program Bridging across Physics and Chemistry"
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2015-01-30
• [Presentation] Research on spin and charge Kondo effects of Anderson model with local repulsive and attractive interactions by numerical renormalization group technique (2015)
  • Author(s): Dai Matsui and Takashi Hotta
  • Organizer: TMU International Symposium on "The Global Human Resource Program Bridging across Physics and Chemistry"
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2015-01-30
• [Presentation] Calculation of superconducting transition temperature in BiS2-based layered superconductors by random phase approximation (2015)
  • Author(s): Tomoaki Agatsuma and Takashi Hotta
  • Organizer: TMU International Symposium on "The Global Human Resource Program Bridging across Physics and Chemistry"
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2015-01-30
• [Presentation] Stabilization of layered magnetic structure of chromium compounds due to TiO2 type distortion (2015)
  • Author(s): Yasuhiro Kondo and Takashi Hotta
  • Organizer: TMU International Symposium on "The Global Human Resource Program Bridging across Physics and Chemistry"
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2015-01-30
• [Presentation] 層状マンガン酸化物における界面誘起の電荷密度振動現象 (2014)
  • Author(s): 山村諒祐・堀田貴嗣
  • Organizer: 首都大学東京研究環「特異な結晶構造に創出する新奇量子相の解明」第２回研究会
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2014-09-26
• [Presentation] ヤーン・テラー歪みを考慮した二重交換模型に基づくクロム化合物の磁気構造の研究 (2014)
  • Author(s): 近藤泰弘・堀田貴嗣
  • Organizer: 首都大学東京研究環「特異な結晶構造に創出する新奇量子相の解明」第２回研究会
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2014-09-26
• [Presentation] BiS2系新規層状超伝導体の乱雑位相近似によるスピン・軌道感受率の計算 (2014)
  • Author(s): 我妻友明・堀田貴嗣
  • Organizer: 首都大学東京研究環「特異な結晶構造に創出する新奇量子相の解明」第２回研究会
  • Place of Presentation: 首都大学東京南大沢キャンパス、東京
  • Year and Date: 2014-09-26
• [Presentation] ヤーン・テラー歪みを考慮した二重交換模型に基づくクロム化合物の磁気構造の研究 (2014)
  • Author(s): 近藤泰弘・堀田貴嗣
  • Organizer: 日本物理学会2014年秋季大会
  • Place of Presentation: 中央大学春日井キャンパス、愛知
  • Year and Date: 2014-09-07 – 2014-09-19
• [Presentation] 層状マンガン酸化物における界面誘起の電荷密度振動現象 (2014)
  • Author(s): 山村諒祐・堀田貴嗣
  • Organizer: 日本物理学会2014年秋季大会
  • Place of Presentation: 中央大学春日井キャンパス、愛知
  • Year and Date: 2014-09-07 – 2014-09-10
• [Presentation] 非調和ヤーンテラー振動と近藤効果 (2014)
  • Author(s): 堀田貴嗣
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] Effect of phonon-mediated attraction on the Kondo phenomenon emerging from a vibrating magnetic ion (2013)
  • Author(s): T. Fuse and T. Hotta
  • Organizer: International Conference on Strongly Correlated Electron Systems
  • Place of Presentation: Tokyo, Japan
• [Presentation] Electric Dipolar Susceptibility of the Anderson-Holstein Model
  • Author(s): Takahiro Fuse and Takashi Hotta
  • Organizer: International Conference on Magnetism 2012
  • Place of Presentation: Busan, Korea
• [Presentation] Kondo effect emerging from a spin-vibronic state
  • Author(s): Takahiro Fuse and Takashi Hotta
  • Organizer: XXIst International Symposium on the Jahn-Teller Effect (JT2012)
  • Place of Presentation: Tsukuba, Japan
• [Presentation] Fermi-Surface Topology and Superconductivity Induced by Jahn-Teller Phonons
  • Author(s): Takashi Hotta and Yuji Shiba
  • Organizer: XXIst International Symposium on the Jahn-Teller Effect (JT2012)
  • Place of Presentation: Tsukuba, Japan
• [Presentation] Quadrupole Susceptibility of Gd-Based Filled Skutterudites
  • Author(s): Takashi Hotta and Fumiaki Niikura
  • Organizer: Japan-Swiss Workshop on "Current Topics in Theory of Correlated Materials"
  • Place of Presentation: Wako, Japan
• [Presentation] Key role of hybridization between actinide 5f and oxygen 2p orbitals for electronic structure of actinide dioxides
  • Author(s): Takashi Hotta
  • Organizer: The IMR-ASRC 3rd REIMEI International Workshop
  • Place of Presentation: Tokyo, Japan
  • Invited
• [Presentation] アンダーソン・ホルスタイン模型における電気双極子感受率
  • Author(s): 布施貴裕・堀田貴嗣
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学常盤台キャンパス
• [Presentation] 二酸化アクチノイドの電子状態：強束縛近似による解析
  • Author(s): 長谷川裕・眞榮平孝裕・堀田貴嗣
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学常盤台キャンパス
• [Presentation] アンダーソン・ホルスタイン模型における電気双極子モーメントの研究
  • Author(s): 布施貴裕・堀田貴嗣
  • Organizer: 第6回物性科学領域横断研究会「凝縮系科学の最前線」
  • Place of Presentation: 東京大学武田先端知ビル5階武田ホール
• [Presentation] 振動する磁性イオンの近藤効果に対するホルスタインフォノンの影響
  • Author(s): 布施貴裕・堀田貴嗣
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学東広島キャンパス
• [Remarks] 首都大学東京理工学研究科物理学専攻・強相関電子論研究室ホームページ
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