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

H. Shibata, K. Semba, Azusa 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
Externally publishedYes

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Substitution reactions
Single crystals
substitutes
Infrared radiation
reflectance
conductivity
single crystals
retarding
Optical conductivity
Fermi liquids
Spin fluctuations
fluctuation theory
augmentation
Infrared absorption
infrared absorption
Scattering
Impurities
low frequencies
impurities
room temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Infrared reflectivity of untwinned YBa2(Cu1-xZnx)3O7-δ single crystals. / Shibata, H.; Semba, K.; Matsuda, Azusa; Yamada, T.

In: Physical Review B, Vol. 51, No. 14, 1995, p. 9294-9297.

Research output: Contribution to journalArticle

Shibata, H. ; Semba, K. ; Matsuda, Azusa ; Yamada, T. / Infrared reflectivity of untwinned YBa2(Cu1-xZnx)3O7-δ single crystals. In: Physical Review B. 1995 ; Vol. 51, No. 14. pp. 9294-9297.
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