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
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UCHINOKURA Kunimitsu
Department of Advanced Materials Science, The University of Tokyo
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KISHIO Koji
Department of Industrial Chemistry, University of Tokyo
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Kimura Tsuyoshi
Department of cardiovascular medicine, School of Medicine, Kyoto University
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TAKEI Humihiko
Institute for Solid State Physics, The University of Tokyo
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SHIBAUCHI Takasada
Department of Physics, Kyoto University
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MAEDA Atsutaka
Department of Basic Science, The University of Tokyo
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KITANO Haruhisa
Department of Physics and Mathematics, Aoyama Gakuin University
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Maeda A
Univ. Tokyo Tokyo Jpn
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Takei Humihiko
Institute For Solid State Physics University Of Tokyo
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Takei Humihiko
Institute For Iron Steel And Other Metals Tohoku University
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ASAOKA Hidehito
Institute for Solid State Physics, The University of Tokyo
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Uchinokura Kunimitsu
Department Of Advanced Materials Science The University Of Tokyo
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Uchinokura Kunimitsu
Department Of Applied Physics The University Of Tokyo:(also) Department Of Advanced Materials Scienc
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Kishio Koji
Department Of Applied Chemistry University Of Tokyo
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Shibauchi Takasada
Department Of Applied Physics University Of Tokyo
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Maeda Atsutaka
Department Of Applied Physics The University Of Tokyo
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Asaoka Hidehito
Institute For Solid State Physics University Of Tokyo:japan Atomic Energy Research Laboratory
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Uchinokura K
Department Of Advanced Materials Science The University Of Tokyo
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Shigaki Ichiro
Electronics Research Laboratory
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IZUMI Kyoko
Department of Applied Physics,University of Tokyo
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SUZUKI Takuya
Department of Applied Physics,University of Tokyo
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Kitano Haruhisa
Department Of Basic Science The University Of Tokyo
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Kitano Haruhisa
Departmento Of Pure And Applied Sciences University Of Tokyo
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Izumi Kyoko
Department Of Applied Physics University Of Tokyo:optoelectronics Laboratory
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Kimura Tsuyoshi
Department Of Applied Chemistry University Of Tokyo
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Suzuki Takuya
Department Of Applied Physics University Of Tokyo:fuji Electric Corp.
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Maeda Atsutaka
Department of Basic Science,The University of Tokyo
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