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Infrared properties of high Tcsuperconductors

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4534(91)91950-9
Disciplines
  • Logic
  • Philosophy
  • Physics

Abstract

Abstract Over the past several years a coherent phenomenology of the high T c cuprate superconductors has begun to emerge. Infrared measurements have contributed several important ingredients to this picture including: 1) the inference of a scattering rate that is linear in frequency for ω>T, and of order ω, --2) a characteristic energy scale in the superconducting state of 500 cm −1 (60 meV), which can be interpreted as a superconducting pair excitation threshold or energy gap, and --3) evidence for very unusual temperature dependence in the vicinity of T c. An attempt to describe these aspects of the data is presented here.

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