Superconducting Double Transition and the Upper Critical Field Limit of Sr2RuO4 in Parallel Magnetic Fields.

• Deguchi Kazuhiko

  Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502

• Tanatar Makariy A.

  Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012

• Mao Zhiqiang

  Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012

• Ishiguro Takehiko

  Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012

• Maeno Yoshiteru

  Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502 CREST, Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012 Kyoto University International Innovation Center, Kyoto 606-8501

Bibliographic Information

Other Title

• Superconducting Double Transition and the Upper Critical Field Limit of Sr₂RuO₄in Parallel Magnetic Fields

Abstract

We studied the specific heat and thermal conductivity of the spin-triplet superconductor Sr₂RuO₄ at low temperatures and under oriented magnetic fields H. We resolved a double peak structure of the superconducting transition under magnetic field for the first time, which provides thermodynamic evidence for the existence of multiple superconducting phases. We also found a clear limiting of the upper critical field H_c2 for the field direction parallel to the RuO₂ plane only within ± 2°. The limiting of H_c2 occurs in the same H–T domain of the second superconducting phase; we suggest that the two phenomena have the same physical origin.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 71 (12), 2839-2842, 2002

  THE PHYSICAL SOCIETY OF JAPAN

Keywords

• Sr<FONT SIZE="-1"><SUB>2</SUB></FONT>RuO<FONT SIZE="-1"><SUB>4</SUB></FONT>
• spin-triplet superconductivity
• upper critical field
• specific heat

Details

• CRID: 1390282679159821568
• NII Article ID: 110001954150
• NII Article ID: 210000103983
• NII Article ID: 130004538025
• NII Book ID: AA00704814
• DOI: 10.1143/jpsj.71.2839
• BIBCODE: 2002JPSJ...71.2839D
• ISSN: 13474073
• ISSN: 00319015
• NDL BIB ID: 6393459
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6393459
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.71.2839
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed