Infrared Probe of Transition from Superconductor to Nonmetal in YBa 2 \(Cu 1-x Zn x \) 4 O 8
作者： D. N. Basov , B. Dabrowski , T. Timusk
DOI: 10.1103/PHYSREVLETT.81.2132
关键词: Infrared 、 Charge (physics) 、 Nonmetal 、 Type-I superconductor 、 Impurity 、 Superconductivity 、 Bound state 、 Condensed matter physics 、 Materials science 、 Optical conductivity
摘要: We report on a study of the optical conductivity single crystals high-Tc superconductor YBa2Cu4O8 in which superconductivity is suppressed by random substitution Cu with Zn. The a-axis infrared spectrum, direct measure charge dynamics CuO2 planes, dominated bound state at o120 cm21. This indicates that low-energy electronic states are verge localization driven Zn impurities. [S0031-9007(98)07061-6]
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