OPTICAL-SPECTRA OF PR2-XCEXCUO4-DELTA CRYSTALS - EVOLUTION OF IN-GAP STATES WITH ELECTRON DOPING

被引：51

作者：

ARIMA, T ^{[1
]}

TOKURA, Y ^{[1
]}

UCHIDA, S ^{[1
]}

机构：

[1] UNIV TOKYO,SUPERCONDUCT RES COURSE,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.48.6597

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The systematic change of optical conductivity spectra with carrier doping and their anisotropy have been investigated for single crystals of Pr2-xCexCuO4-delta; the crystals were grown by a traveling solvent floating-zone method. The evolution of in-gap states with x has shown up not only in the growth of midinfrared absorption below the charge-transfer gap but also in higher-lying interband transitions between O 2p and Cu 4s states. Possible roles of the reducing procedure, which is indispensable for producing superconductivity in the electron-doped cuprates, are also discussed in terms of observed changes of the optical spectra.

引用

页码：6597 / 6603

页数：7

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