FREE-CARRIER OPTICAL-RESPONSE OF YBA2CU3O7

被引：19

作者：

HUMLICEK, J

KIRCHER, J

HABERMEIER, HU

CARDONA, M

FANG, Y

WELP, U

VANDERWOORT, K

CRABTREE, D

机构：

[1] MASARYK UNIV,DEPT SOLID STATE PHYS,CS-61137 BRNO,CZECHOSLOVAKIA

[2] ARGONNE NATL LAB,ARGONNE,IL 60439

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 79卷 / 08期

关键词：

D O I：

10.1016/0038-1098(91)90611-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have determined the anisotropic optical response of YBa2Cu3O7 in the 0.75-2 eV range using ellipsometry on a (110) oriented film and an untwinned crystal. The free-carrier contributions within the CUO2 planes and CuO chains are represented excellently by orientation-dependent Drude terms with constant scattering rates. The response in the direction perpendicular to the CuO2 planes is non-metallic in our spectral region; a broad band centered at approximately 1.5 eV has strength comparable with the in-plane interband contributions obtained by subtracting the Drude terms.

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页码：673 / 676

页数：4

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