In-Plane Microwave Conductivity and Quasiparticle Scattering Rate of Superconducting High-T_c Cuprates

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概要

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• The surface impedance Z. :::: R. -f IX. at 9.6 and 51 GHz was measured in single crystals ofYBa3Cu3O7, BizSrzCaCuzOg, and La).g5Srg.j5CuO,j. At low temperatures, the surface resis-tance R. of all the materials changes linearly in temperature, and the surface reactance (pen-etration depth) also changes Iinearly in YBazCu307 and Bi-zSrzCaCuzOg. From Z. data, thecomplex conductivity o : (71 - ion and the quasiparticle scattering rate I/r were determined.The broad peak-like structure in the temperature dependence of o), which comes from strongsuppression of 1/T below T., is observed for all the superconductors. The low-temperature scat-tering rate extracted trsing the generalized two-fluid model is compared with the published dataat different frequencies in YBazCtr3O7. It is found that the inelastic scattering rate 1/T atlow temperatures strongly depends on the measurement frequency f within this model. In themicrowave region, the normalized scattering rate 'r'. / r is nearly proportional to the normalizedfrequency f /T., and this relation seems to be universal for optirnurn-doped high-'Z'. supercon-ductors. The implications for the nature of the superconducting state are discussed.

• 社団法人日本物理学会の論文
• 1996-10-15

著者

• UCHINOKURA Kunimitsu

  Department of Advanced Materials Science, The University of Tokyo

• KISHIO Koji

  Department of Industrial Chemistry, University of Tokyo

• Kimura Tsuyoshi

  Department of cardiovascular medicine, School of Medicine, Kyoto University

• TAKEI Humihiko

  Institute for Solid State Physics, The University of Tokyo

• SHIBAUCHI Takasada

  Department of Physics, Kyoto University

• MAEDA Atsutaka

  Department of Basic Science, The University of Tokyo

• KITANO Haruhisa

  Department of Physics and Mathematics, Aoyama Gakuin University

• Maeda A

  Univ. Tokyo Tokyo Jpn

• Takei Humihiko

  Institute For Solid State Physics University Of Tokyo

• Takei Humihiko

  Institute For Iron Steel And Other Metals Tohoku University

• ASAOKA Hidehito

  Institute for Solid State Physics, The University of Tokyo

• Uchinokura Kunimitsu

  Department Of Advanced Materials Science The University Of Tokyo

• Uchinokura Kunimitsu

  Department Of Applied Physics The University Of Tokyo:(also) Department Of Advanced Materials Scienc

• Kishio Koji

  Department Of Applied Chemistry University Of Tokyo

• Shibauchi Takasada

  Department Of Applied Physics University Of Tokyo

• Maeda Atsutaka

  Department Of Applied Physics The University Of Tokyo

• Asaoka Hidehito

  Institute For Solid State Physics University Of Tokyo:japan Atomic Energy Research Laboratory

• Uchinokura K

  Department Of Advanced Materials Science The University Of Tokyo

• Shigaki Ichiro

  Electronics Research Laboratory

• IZUMI Kyoko

  Department of Applied Physics,University of Tokyo

• SUZUKI Takuya

  Department of Applied Physics,University of Tokyo

• Kitano Haruhisa

  Department Of Basic Science The University Of Tokyo

• Kitano Haruhisa

  Departmento Of Pure And Applied Sciences University Of Tokyo

• Izumi Kyoko

  Department Of Applied Physics University Of Tokyo:optoelectronics Laboratory

• Kimura Tsuyoshi

  Department Of Applied Chemistry University Of Tokyo

• Suzuki Takuya

  Department Of Applied Physics University Of Tokyo:fuji Electric Corp.

• Maeda Atsutaka

  Department of Basic Science,The University of Tokyo

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