Research on the electronic nematic phases in strongly correlated electron systems
Project/Area Number |
24244057
|
Research Category |
Grant-in-Aid for Scientific Research (A)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Condensed matter physics II
|
Research Institution | The University of Tokyo (2014) Kyoto University (2012-2013) |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥47,320,000 (Direct Cost: ¥36,400,000、Indirect Cost: ¥10,920,000)
Fiscal Year 2014: ¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2013: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2012: ¥22,230,000 (Direct Cost: ¥17,100,000、Indirect Cost: ¥5,130,000)
|
Keywords | 対称性の破れ / 隠れた秩序 / 電子相関 / 重い電子系 / 鉄系超伝導 / 構造解析 / サイクロトロン共鳴 / 磁気トルク / ネマティック秩序 / 角度依存性 / 強相関電子系 / 結晶構造解析 / ネマティック感受率 |
Outline of Final Research Achievements |
In this project, we have studied the so-called "electronic nematic" states in strongly correlated electron systems such as iron-based superconductors and heavy-fermion materials, by using several new experimental techniques. One of the most important achievements is that we identified broken fourfold rotational symmetry in the hidden-order phase in a uranium-based compound, whose nature has been a long-standing mystery in condensed matter physics. This conclusion has been consistently obtained from a variety of measurements including magnetic anisotropy measurements by using sensitive torque magnetometry, high-resolution crystal structure analysis by using synchrotron X-ray, angular dependence of the effective mass by cyclotron resonance, and nematic susceptibility analysis from elastoresistance measurements by using piezoelectric devices.
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Report
(4 results)
Research Products
(74 results)
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[Journal Article] Fermi Surface of IrTe2 in the Valence-Bond State as Determined by Quantum Oscillations2015
Author(s)
S. F. Blake, M. D. Watson, A. McCollam, S. Kasahara, R. D. Johnson, A. Narayanan, G. L. Pascut, K. Haule, V. Kiryukhin, T. Yamashita, D. Watanabe, T. Shibauchi, Y. Matsuda, A. I. Coldea
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Journal Title
Physical Review B
Volume: 91
Issue: 12
Pages: 121105-121105
DOI
Related Report
Peer Reviewed
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[Journal Article] Structural Origin of the Anomalous Temperature Dependence of the Local Magnetic Moments in the CaFe2As2 Family of Materials2015
Author(s)
L. Ortenzi, H. Gretarsson, S. Kasahara, Y. Matsuda, T. Shibauchi, K. D. Finkelstein, W. Wu, S. R. Julian, Y.-J. Kim, I. I. Mazin, and L. Boeri,
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Journal Title
Phys. Rev. Lett.
Volume: 114
Issue: 4
Pages: 047001-047001
DOI
Related Report
Peer Reviewed
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[Journal Article] Colossal thermomagnetic response in the exotic superconductor URu2Si22015
Author(s)
T. Yamashita, Y. Shimoyama, Y. Haga, T.D. Matsuda, E. Yamamoto, Y. Onuki, H. Sumiyoshi, S. Fujimoto, A. Levchenko, T. Shibauchi, and Y. Matsuda
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Journal Title
Nature Physics
Volume: 11
Issue: 1
Pages: 17-20
DOI
Related Report
Peer Reviewed
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[Journal Article] Anomalous Critical Fields in Quantum Critical Superconductors2014
Author(s)
C. Putzke, P. Walmsley, J. D. Fletcher, L. Malone, D. Vignolles, C. Proust, S. Badoux, P. See, H. E. Beere, D. A. Ritchie, S. Kasahara, Y. Mizukami, T. Shibauchi, Y. Matsuda, and A. Carrington,
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Journal Title
Nat. Commun.
Volume: 5
Issue: 1
Pages: 5679-5679
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Disorder-Induced Topological Change of the Superconducting Gap Structure in Iron Pnictides2014
Author(s)
Y. Mizukami, M. Konczykowski, Y. Kawamoto, S. Kurata, S. Kasahara, K. Hashimoto, V. Mishra, A. Kreisel, Y. Wang, P. J. Hirschfeld, Y. Matsuda, and T. Shibauchi,
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Journal Title
Nat. Commun.
Volume: 5
Issue: 1
Pages: 5657-5657
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Field-Induced Superconducting Phase of FeSe in the BCS-BEC Crossover2014
Author(s)
S. Kasahara, T. Watashige, T. Hanaguri, Y. Kohsaka, T. Yamashita, Y. Shimoyama, Y. Mizukami, R. Endo, H. Ikeda, K. Aoyama, T. Terashima, S. Uji, T. Wolf, H. v. Loehneysen, T. Shibauchi, Y. Matsuda
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Journal Title
Proceedings of the National Academy of Sciences of the United States of America
Volume: 111
Issue: 46
Pages: 16309-16313
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Anomalous Fermi surface in FeSe seen by Shubnikov-de Haas oscillation measurements2014
Author(s)
Taichi Terashima, Naoki Kikugawa, Andhika Kiswandhi, Eun-Sang Choi, James S. Brooks, Shigeru Kasahara, Tatsuya Watashige, Hiroaki Ikeda, Takasada Shibauchi, Yuji Matsuda, Thomas Wolf, Anna E. Bohmer, Frederic Hardy, Christoph Meingast, Hilbert v. Lohneysen, Michi-To Suzuki, Ryotaro Arita, Shinya Uji
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Journal Title
Physical Review B
Volume: 90
Issue: 14
Pages: 144517-144517
DOI
Related Report
Peer Reviewed
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[Journal Article] On Infrared Pseudogap in Cuprate and Pnictide High-Temperature Superconductors2014
Author(s)
S. J. Moon, Y. S. Lee, A. A. Schafgans, A. V. Chubukov, S. Kasahara, T. Shibauchi, T. Terashima, Y. Matsuda, M. A. Tanatar, R. Prozorov, A. Thaler, P. C. Canfield, S. L. Bud'ko, A. S. Sefat, D. Mandrus, K. Segawa, Y. Ando, D. N. Basov,
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Journal Title
Phys. Rev. B
Volume: 90
Issue: 1
Pages: 014503-014503
DOI
Related Report
Peer Reviewed
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[Journal Article] Direct Observation of Lattice Symmetry Breaking at the Hidden-Order Transition in URu2Si22014
Author(s)
S. Tonegawa, S. Kasahara, T. Fukuda, K. Sugimoto, N. Yasuda, Y. Tsuruhara, D. Watanabe, Y. Mizukami, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki, H. Ikeda, Y. Matsuda, and T. Shibauchi,
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Journal Title
Nat. Commun.
Volume: 5
Issue: 1
Pages: 4188-4188
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Journal Article] Controllable Rashba Spin-Orbit Interaction in Artificially Engineered Superlattices Involving the Heavy-Fermion Superconductor CeCoIn52014
Author(s)
M. Shimozawa, S. K. Goh, R. Endo, R. Kobayashi, T. Watashige, Y. Mizukami, H. Ikeda, H. Shishido, Y. Yanase, T. Terashima, T. Shibauchi, and Y. Matsuda,
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Journal Title
Phys. Rev. Lett.
Volume: 印刷中
Related Report
Peer Reviewed
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[Journal Article] Cyclotron Resonance Study of Quasiparticle Mass and Scattering Rate in the Hidden-Order and Superconducting Phases of URu2Si22013
Author(s)
S. Tonegawa, K. Hashimoto, K. Ikada, Y. Tsuruhara, Y.-H. Lin, H. Shishido, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki, H. Ikeda, Y. Matsuda, and T. Shibauchi
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Journal Title
Phys. Rev. B
Volume: 88
Issue: 24
Pages: 245131-245131
DOI
Related Report
Peer Reviewed
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