NATURE OF HOLE STATES IN CUPRATE SUPERCONDUCTORS

被引：15

作者：

MEHTA, A ^{[1
]}

DICARLO, J ^{[1
]}

NAVROTSKY, A ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT GEOL & GEOPHYS SCI,PRINCETON,NJ 08544

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1992年 / 101卷 / 01期

关键词：

D O I：

10.1016/0022-4596(92)90213-F

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

This study addresses the nature of the hole states in the high oxidation state cuprates. From the thermochemistry of oxidation in the cuprate superconductors, specifically inLa2-xAxCuO4-x/2+δ (A =Ba, Sr, Ca, Pb) and YBa2Cu3O6+δ, a model is proposed that assigns a major fraction of the holes in these "Cu3+" materials to states which chemically are "peroxidelike," involving holes paired on adjacent oxygens. Based on this hypothesis previously reported structural observations on NaCuO2, KCuO2,La2-xSrxCuO4-x/2+δ, and YBa2Cu3O6+δ are modeled. Electrical properties (including superconductivity) of the high oxidation state cuprates are closely related to these structural trends. © 1992 Academic Press, Inc. All rights reserved.

引用

页码：173 / 185

页数：13

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