ELECTRONIC-STRUCTURE OF BI-BASED COPPER-OXIDE SUPERCONDUCTORS - A COMPARATIVE PHOTOEMISSION-STUDY OF BI2SR2CACU2O8, BI2SR2CUO6, AND BI2SR2COO6+DELTA

被引：20

作者：

EISAKI, H

TAKAGI, H

UCHIDA, S

MATSUBARA, H

SUGA, S

NAKAMURA, M

YAMAGUCHI, K

MISU, A

NAMATAME, H

FUJIMORI, A

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,SYNCHROTRON RADIAT LAB,TOKYO 118,JAPAN

[2] SCI UNIV TOKYO,DEPT PHYS,SHINJUKU KU,TOKYO 162,JAPAN

[3] UNIV TOKYO,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.41.7188

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Bi-based high-Tc copper oxide superconductors, Bi2Sr2CaCu2O8, Bi2Sr2CuO6, and a related material Bi2Sr2CoO6+ have been studied by photoemission spectroscopy. While common prominent structures at high-binding energies (>2 eV) are attributed to oxygen 2p states in the Bi-O planes, emission near the Fermi level (EF) is different from one other, indicating that these states are oxygen 2p states hybridizing with the transition-metal 3d states. For the states near EF, the resonant behavior at the Cu 3p-3d absorption threshold and the photon energy dependence of the intensities are shown to be consistent with CuO3d9O 2p hole local singlets formed within the CuO2 planes. © 1990 The American Physical Society.

引用

页码：7188 / 7191

页数：4

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