Electron spin resonance of copper pair centers in crystals with perovskite structure

被引：13

作者：

Azamat, DV ^{[1
]}

Badalyan, AG

Baranov, PG

Syrnikov, PP

Trepakov, VA

Rosa, J

Jastrabik, L

机构：

[1] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

[2] Acad Sci Czech Republ, Inst Phys, CZ-18040 Prague 8, Czech Republic

来源：

JETP LETTERS | 1999年 / 69卷 / 12期

关键词：

76.30.Fc;

D O I：

10.1134/1.568117

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Copper pair centers, which could be of interest for obtaining quantitative information about exchange interactions in superconductors based on cuprate perovskites, are observed in crystals with the perovskite structure by the ESR method. Such centers are investigated in KTaO3:Cu and K1-xLixTaO3:Cu crystals. A model consisting of a chain of two equivalent Cu2+ ions and three oxygen vacancies, extending along the [100] axis, is proposed for the centers. The exchange interaction in the pairs is ferromagnetic. (C) 1999 American Institute of Physics. [S0021-3640(99)01112-3].

引用

页码：943 / 948

页数：6