Infrared reflectivity of untwinned YBa2(Cu1-xZnx)3O7-δ single crystals

H. Shibata, K. Semba, A. Matsuda, T. Yamada

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The ab-plane reflectivity of untwinned YBa2(Cu1-xZnx)3O7-δ single crystals is measured between 250 and 20 000 cm-1 at room temperature. Through Zn substitution, the optical conductivity along Eb shows a broad peak at about 2000 cm-1, suggesting localization of the chain band carrier. The conductivity along Ea shows no mid-infrared absorption and slightly decreases from the far- to mid-infrared region through Zn substitution. Analysis of the conductivity along Ea shows that the main effect of Zn substitution is to increase the impurity scattering rate. A small amount of carrier reduction and suppression of effective mass enhancement at low frequency are also observed. The suppression of the effective mass enhancement is discussed by the antiferromagnetic spin-fluctuation theory of Fermi liquid.

Original languageEnglish
Pages (from-to)9294-9297
Number of pages4
JournalPhysical Review B
Volume51
Issue number14
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics

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