Possible Anisotropic Order Parameter in Pyrochlore Superconductor KOs_2O_6 Probed by Muon Spin Rotation(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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概要

• 論文の詳細を見る

• Magnetic penetration depth (λ_<eff>) in a pyrochlore superconductor KOs_2O_6 was studied by means of muon spin rotation (μSR). The temperature dependence of the transverse spin relaxation rate, which is proportional to λ^<-2>_<eff>, exhibits a considerable deviation from that expected for the empirical two-fluid model (∝ T^4), obeying a T^2 tendency. Furthermore, λ_<eff> apparently increases with increasing applied field, suggesting the presence of nonlinear and nonlocal effects. The present result strongly suggests that the superconducting order parameter in KOs_2O_6 is anisotropic or multigapped with a small energy gap.

• 社団法人日本物理学会の論文
• 2005-06-15

著者

• MURAOKA Yuji

  Institute for Solid State Physics, University of Tokyo

• HIROI Zenji

  Institute for Solid State Physics, University of Tokyo

• Saha Shanta

  Muon Science Laboratory Institute Of Materials Structure Science High Energy Accelerator Research Or

• 広井 善二

  Institute For Solid State Physics University Of Tokyo

• HIGEMOTO Wataru

  Advanced Science Research Center, Japan Atomic Energy Agency

• Hiroi Z

  Institute For Solid State Physics University Of Tokyo

• Hiroi Zenji

  Institute For Chemical Research Kyoto University

• Muraoka Y

  Institute For Solid State Physics University Of Tokyo:(present Office)research Laboratory For Surfac

• Muraoka Yuji

  Institute For Solid State Physics University Of Tokyo

• Kadono Ryosuke

  Kek Ibaraki

• Kadono Ryosuke

  Muon Science Loboratory The Institute Of Physical And Chemical Research (riken)

• YONEZAWA Shigeki

  Institute for Solid State Physics, University of Tokyo

• Saha Shanta

  Muon Science Laboratory Institute Of Material Structure Science High Energy Accelerator Research Org

• Higemoto W

  Advanced Science Research Center Japan Atomic Energy Agency

• Yonezawa Shigeki

  Institute For Solid State Physics University Of Tokyo

• Koda A

  Department Of Materials Structure Science School Of High Energy Accelerator Science The Graduate Uni

• Koda Akihiro

  Kyokugen Osaka University:graduate School Of Engineering Science Osaka University

• Koda Akihiro

  Institute Of Materials Structure Science High Energy Accelerator Research Organization (kek):departm

• KODA Akihiro

  Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research

• OHISHI Kazuki

  Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research

• Kadono Ryosuke

  Department Of Materials Structure Science The Graduate University For Advanced Studies

• Ohishi K

  Advanced Science Research Center Japan Atomic Energy Agency

• Higemoto Wataru

  Advanced Science Research Center Japan Atomic Energy Agency

• Muraoka Y

  Univ. Tokyo Chiba

• SAHA Shanta

  Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)

• KADONO Ryosuke

  Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK):School of Mathematical and Physical Science, The Graduate University for Advanced Studies

• Kadono Ryosuke

  Muon Science Laboratory and Condensed Matter Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan

• KODA Akihiro

  Muon Science Laboratory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK)

• Koda Akihiro

  Muon Science Laboratory and Condensed Matter Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan

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