Exploration of chiral d-wave superconducting states in honeycomb-lattice compounds with van Hove singularity
Project/Area Number |
16K05451
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Condensed matter physics II
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Research Institution | Okayama University |
Principal Investigator |
Kudo Kazutaka 岡山大学, 異分野基礎科学研究所, 准教授 (40361175)
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Research Collaborator |
ADACHI Tadashi
OTA Hiromi
|
Project Period (FY) |
2016-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
|
Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
Keywords | カイラル超伝導 / ハニカム構造 / 超伝導材料 |
Outline of Final Research Achievements |
A chiral d-wave superconducting state was explored in compounds with honeycomb structures. (1) We reported a new superconductor SrPtSb-type BaPtSb with a PtSb honeycomb network. Our muon spin rotation / relaxation experiments suggested the occurrence of a spontaneous magnetic field below the superconducting transition temperature. This compound can be regarded as a candidate for a chiral d-wave superconductor. In the future, we plan to conduct experiments with improved statistical accuracy using single crystals. (2) We reported new superconductors SrPtSb-type BaPtAs and YPtAs-type BaPtAs with PtAs honeycomb network. These discoveries enabled systematic verification experiments using compounds with different constituent elements and structures.
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Academic Significance and Societal Importance of the Research Achievements |
カイラル超伝導は、電子対が自発磁化を持ち時間反転対称性を破る新奇な超伝導状態である。典型的なカイラル超伝導物質を開発できれば、マヨナラ粒子の研究やエッジ状態の物理に進展が期待できる。本研究では、スピン一重項のカイラルd波電子対に着目して研究を行い、その候補物質を見出した。研究開始当初、その超伝導状態を示す典型物質は見つかっていなかった。
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Report
(4 results)
Research Products
(70 results)
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[Journal Article] Ultrafast dissolution and creation of bonds in IrTe2induced by photodoping2018
Author(s)
Shin-ichiro Ideta, Dongfang Zhang, Arend G. Dijkstra, Sergey Artyukhin, Sercan Keskin, Roberto Cingolani, Takahiro Shimojima, Kyoko Ishizaka, Hiroyuki Ishii, Kazutaka Kudo, Minoru Nohara, and R. J. Dwayne Miller
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Journal Title
Science Advances
Volume: 4
Issue: 7
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Temperature-dependent local structure and superconductivity of BaPd2As2 and SrPd2As22018
Author(s)
Kensei Terashima, Eugenio Paris, Eduardo Salas-Colera, Laura Simonelli, Boby Joseph, Takanori Wakita, Kazumasa Horigane, Masanori Fujii, Kaya Kobayashi, Rie Horie, Jun Akimitsu, Yuji Muraoka, Takayoshi Yokoya and Naurang Lal Saini
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Journal Title
Phys. Rev. B
Volume: 98
Issue: 9
Pages: 094525-094525
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Atomic imaging of iron-based superconductor parent FeTe using x-ray fluorescence holography2018
Author(s)
B. Paulus, S. Hosokawa, J. R. Stellhorn, B. Klee, K. M. Sowa, K. Kudo, N. Nishimoto, H. Ota, M. Nohara, M. de Boissieu, N. Blanc, N. Boudet, and W.-C. Pilgrim
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Journal Title
Physica Status Solidi B
Volume: 255
Issue: 11
Pages: 1800200-1800200
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Pressure-Induced Superconductivity from Doping-Induced Antiferromagnetic Phase of 112-type Ca1-xLaxFeAs22017
Author(s)
S. Kitagawa, T. Sekiya, Y. Fujiyoshi, S. Araki, T. C. Kobayashi, N. Nishimoto, T. Mizukami, S. Ioka, K. Fujimura, K. Kudo, M. Nohara
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Journal Title
Journal of the Physical Society of Japan
Volume: 86
Issue: 11
Pages: 113705-113705
DOI
NAID
Related Report
Peer Reviewed
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[Journal Article] A Novel One-Dimensional Electronic State at IrTe2 Surface2017
Author(s)
D. Ootsuki, H. Ishii, K. Kudo, M. Nohara, M. Takahashi, M. Horio, A. Fujimori, T. Yoshida, M. Arita, H. Anzai, H. Namatame, M. Taniguchi, N. L. Saini, T. Mizokawa
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Journal Title
Journal of the Physical Society of Japan
Volume: 86
Issue: 12
Pages: 123704-123704
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Charge-Stripe Order and Superconductivity in Ir1-xPtxTe22017
Author(s)
O. Ivashko, L. Yang, D. Destraz, E. Martino, Y. Chen, C. Y. Guo, H. Q. Yuan, A. Pisoni, P. Matus, S. Pyon, K. Kudo, M. Nohara, L. Forro, H. M. Ronnow, M. Hucker, M. v. Zimmermann, J. Chang
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Journal Title
Scientific Reports
Volume: 7
Issue: 1
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Distinct local structure of superconducting Ca10M4As8(Fe2As2)5(M=Pt,Ir)2017
Author(s)
E. Paris, T. Wakita, O. Proux, T. Yokoya, K. Kudo, D. Mitsuoka, T. Kimura, K. Fujimura, N. Nishimoto, S. Ioka, M. Nohara, T. Mizokawa, N. L. Saini
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Journal Title
Physical Review B
Volume: 96
Issue: 22
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Temperature dependent local atomic displacements in ammonia intercalated iron selenide superconductor2016
Author(s)
E. Paris, L. Simonelli, T. Wakita, C. Marini, J.-H. Lee, W. Olszewski, K. Terashima, T. Kakuto, N. Nishimoto, T. Kimura, K. Kudo, T. Kambe, M. Nohara, T. Yokoya, N. L. Saini
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Journal Title
Scientific Reports
Volume: 6
Issue: 1
Pages: 27646-27646
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Presentation] X-ray fluorescence holography of Pr-doped CaFe2As22017
Author(s)
K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, M. Nohara
Organizer
28th International Conference on Low Temperature Physics (LT28)
Related Report
Int'l Joint Research
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[Presentation] Atomic imaging around Pr and Ca atoms in Ca1-xPrxFe2As2 by x-ray fluorescence holography2017
Author(s)
K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, M. Nohara
Organizer
Meeting on Physics and Chemistry of Emerging Superconductors and Thermoelectric Materials
Related Report
Int'l Joint Research
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[Presentation] Atomic imaging around Pr atoms in Ca1-xPrxFe2As2 by x-ray fluorescence holography2017
Author(s)
K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, M. Nohara
Organizer
J-Physics 2017: International Workshop on Multipole Physics and Related Phenomena
Related Report
Int'l Joint Research
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[Presentation] X-ray fluorescence holography of Ca1-xPrxFe2As22017
Author(s)
K. Kudo, S. Ioka, N. Happo, H. Ota, Y. Ebisu, K. Kimura, T. Hada, T. Kimura, H. Tajiri, S. Hosokawa, K. Hayashi, M. Nohara
Organizer
30th International Symposium on Superconductivity (ISS2017)
Related Report
Int'l Joint Research / Invited
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[Presentation] 鉄系超伝導体PrドープCaFe2As2の蛍光X線ホログラフィー法による局所構造解析2016
Author(s)
井岡賢志, 工藤一貴, 八方直久, 太田弘道, 戎佳宏, 木村耕治, 波田拓馬, 山本健太, 木村拓海, 宮内後太朗, 柊輝, 細川伸也, 林好一, 野原実
Organizer
物性研究所短期研究会「原子層上の活性サイトで発現する局所機能物性」
Place of Presentation
東京大学物性研究所(千葉県・柏市)
Year and Date
2016-12-20
Related Report
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[Presentation] PrドープCaFe2As2の大型単結晶育成と蛍光X線ホログラフィーによるドーパント周りの局所構造解析2016
Author(s)
井岡賢志, 工藤一貴, 八方直久, 太田弘道, 戎佳宏, 山本健太, 木村耕治, 木村拓海, 細川伸也, 林好一, 野原実
Organizer
日本物理学会2016年秋季大会
Place of Presentation
金沢大学(石川県・金沢市)
Year and Date
2016-09-13
Related Report
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[Presentation] PrドープCaFe2As2の蛍光X線ホログラフィー法による局所構造解析2016
Author(s)
井岡賢志, 工藤一貴, 八方直久, 太田弘道, 戎佳宏, 山本健太, 木村耕治, 木村拓海, 細川伸也, 林好一, 野原実
Organizer
科研費新学術領域研究「3D活性サイト科学」第4回成果発表会
Place of Presentation
大阪大学(大阪府・豊中市)
Year and Date
2016-09-10
Related Report
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