Infrared properties of n-type high-temperature superconductors

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Abstract

The infrared properties of n-type high-T c superconductors are in marked contrast with those of their p-type counterparts both in phononic and in electronic features. Disorder-activated forbidden modes and doping-induced extra modes have been observed in Nd 2-xCe xCuO 4 and Sm 2-xCe xCuO 4. The low-temperature reflectivity and transmission measurements identify neither a clear signature for the BCS gap nor any evidence for Holstein shifts of phonons. The gap symmetry and the role of electron-phonon interactions for n-type cuprates are discussed in connection with their infrared properties.

Original languageEnglish
Pages (from-to)4-8
Number of pages5
JournalJournal of the Korean Physical Society
Volume33
Issue number1
Publication statusPublished - 1998 Dec 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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