SPIN-DENSITY AND FORM-FACTOR MEASUREMENTS ON HTSC COPPER OXIDES

被引：3

作者：

GILLON, B

机构：

[1] Laboratoire Léon Brillouin (C.E.A.-C.N.R.S.), C.E.N. Saclay

来源：

PHYSICA B | 1991年 / 174卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(91)90626-P

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Polarized neutron investigations on superconducting copper oxides, La2-xSrxCDO4 and YBa2Cu3O6+x, as well as studies of related antiferromagnetic compounds, using unpolarized neutrons, permit some of the characteristic features of the spin distribution to be outlined. No covalency on the in-plane oxygen atoms is observed, neither in the antiferromagnetic state, nor in the superconducting state. In superconducting compounds, the in-plane copper displays a small induced magnetic moment, about 10(-3)mu-B (H = 5 T), which is almost independent of temperature. In YBa2Cu3O6+x, a distinct behaviour is found for the in-chain copper. The induced spin density in HoBa2Cu3O7 exhibits specific features that are not present in non-superconducting HoBa2Cu3O6.5.

引用

页码：340 / 348

页数：9

共 25 条

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[9]

GILLON B, 1990, 15TH P C IUG BORD

[10]

GILLON B, IN PRESS

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