Anomalous low-field diamagnetic response in ultraclean URuSi superconductor

Okazaki, Ryuji*; Shimozawa, Masaaki*; Shishido, Hiroaki*; Konczykowski, M.*; Haga, Yoshinori ; Matsuda, Tatsuma; Yamamoto, Etsuji ; Onuki, Yoshichika; Yanase, Yoichi*; Shibauchi, Takasada*; Matsuda, Yuji*

The low critical field $H_{rm c1}$ in ultraclean URuSi single crystals with residual resistivity ration exceeding 700 is precisely determined. The whole $H_{rm c1}$ for can be explained by the two-gap with line and point nodes. In contrast, for a distinct kink in the slope of $H_{rm c1}$ was found at 1.2 K, which cannot be accounted for by the two-gap. This outstanding anomaly demonstrates a highly unusual superconducting state embedded in the hidden order state possibly related to the time reversal symmetry breaking.

Language	:	English
Journal	:	Journal of Physics; Conference Series
Volume	:	273
Number	:
Pages	:	p.012081_1 - 012081_4
Publication Year/Month	:	2011/02
Meeting title	:	International Conference on Strongly Correlated Electron Systems (SCES 2010)
Held date	:	2010/06
Location (city)	:	Santa Fe
Location (country)	:	U.S.A.
Patent information	:
PDF	:
Paper URL	:	https://doi.org/10.1088/1742-6596/273/1/012081
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	第4研究棟
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

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Registration No. : BB20110010
JAEA Abstracts No. : 39000700
Paper Submission No. : 8933

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