Nuclear Spin-Lattice Relaxation of ^<63,65>Cu at the Cu(2)Sites of the High T_c Superconductor YBa_2Cu_3O_<7-δ>

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概要

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• Nuclear spin-lattice relaxation times T. of "Cu and "Cu in the Cu(2) sites of thehigh T. superconductor YBa.Cu,0. , (J : 0.1, T.= 91 K) have been measured for thewide temperature range between 2.2 K and 300 K. The temperature dependence of1 / T. in the normal state has been found to be the one unexpected for simple metals.The influences of antiferromagnetic spin fluctuations in the d-p bands in the Cu(2)-0layers are discussed. The temperature dependence of 1 /T. below T. has also beenfound to be the one which is not expected for isotropic BCS superconductors. Thepower-law like temperature dependence of 1 / T. without any enhancement just belowT has been observed between 40 K and 91 K.[Cu NQR, high T. superconductor, YBa.Cu,0. ,5, nuclear spin-lattice relaxation l[ time, coherence factor, order parameterl

• 社団法人日本物理学会の論文
• 1988-05-15

著者

• 高畠 敏郎

  Department Of Quantum Matter Adsm Hiroshima University:institute For Advanced Materials Research Hir

• YASUOKA Hiroshi

  Institute for Solid State Physics,University of Tokyo

• TSUDA Toshinobu

  Institute for Solid State Physics,University of Tokyo

• Imai Takashi

  放射線医学総合研究所フロンティア研究センター 放射線感受性遺伝子プロジェクト

• Imai Takashi

  University Of Tokyo

• Takabatake Toshiro

  Institute For Solid State Physics University Of Tokyo

• ISHIKAWA Masayasu

  Institute for Solid State Physics, University of Tokyo

• Nakazawa Yasuhiro

  Institute for Solid State Physics, University of Tokyo

• IMAI Takashi

  Institute for Solid State Physics,University of Tokyo

• SHIMIZU Tadashi

  Institute for Solid State Physics,University of Tokyo

• Ishikawa M

  Univ. Tsukuba Ibaraki

• Ishikawa Y

  Toshiba Research And Development Center Kawasaki

• Ishikawa M

  Univ. Tokyo Osaka

• Yasuoka Hiroshi

  Institute For Chemistry Research Kyoto University

• Tsuda T

  Institute For Solid State Physics University Of Tokyo

• Tsuda Toshinobu

  Institute For Solid State Physics The University Of Tokyo:department Of Natural Science Faculty Of E

• Nakazawa Yasuhiro

  Institute For Solid State Physics University Of Tokyo

• Shimizu Tadashi

  Institute For Solid State Physics University Of Tokyo

• Takabatake T

  Hiroshima Univ. Higashi‐hiroshima

• Ishikawa Masayasu

  Institute For Solid State Physics The University Of Tokyo

• Imai T

  Rf Heating Laboratory Naka Fusion Research Establishment Japan Atomic Energy Research Institute

• Iino Masaaki

  The Institute For Solid State Physics The University Of Tokyo

• Nakazawa Y

  Sci. Univ. Tokyo Tokyo

• Yasuoka Hiroshi

  Institute Fo Solid State Physics University Of Tokyo

• Imai Takashi

  Institute For Solid State Physics The University Of Tokyo

• Imai Takashi

  Frontier Res. Ctr. Nirs

• Takabatake Toshiro

  Institute for Advanced Materials Research, Hiroshima University, Higashihiroshima, Hiroshima 739-8530

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