DEVELOPMENT OF THE OPTICAL CONDUCTIVITY WITH DOPING IN SINGLE-DOMAIN YBA2CU3O6+X

被引：68

作者：

COOPER, SL

KOTZ, AL

KARLOW, MA

KLEIN, MV

LEE, WC

GIAPINTZAKIS, J

GINSBERG, DM

机构：

[1] Department of Physics, Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.45.2549

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Optical studies of single-domain crystals of YBa2Cu3O6+x allow us to separate the CuO2-plane and CuO-chain contributions to the optical conductivity as a function of doping between 0.025 and 5.5 eV. We find several interesting consequences of doping on the optical conductivity of YBa2Cu3O6+x: the 4.1-eV transition in tetragonal YBa2Cu3O6.1 is split into a- and b-axis-polarized components by CuO-chain formation; oscillator strength associated with the charge-transfer band of insulating YBa2Cu3O6.1 is redistributed to low frequencies; and the low-frequency conductivity in the CuO2 planes evolves into a non-Drude response comprised of a single resolvable component. The CuO-chain conductivity, by contrast, is dominated by a midinfrared absorption band.

引用

页码：2549 / 2552

页数：4

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