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

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

doi:10.1103/PhysRevB.51.9294

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

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

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	9294-9297
Number of pages	4
Journal	Physical Review B
Volume	51
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.51.9294
Publication status	Published - 1995 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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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.",

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AU - Shibata, H.

AU - Semba, K.

AU - Matsuda, A.

AU - Yamada, T.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - 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.

AB - 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.

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

Abstract

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