Spin-phonon interaction and the EPR linewidth in La2CuO4 and related cuprates

被引：19

作者：

Kochelaev, BI ^{[1
]}

机构：

[1] Kazan State Univ, Kazan 420008, Russia

来源：

JOURNAL OF SUPERCONDUCTIVITY | 1999年 / 12卷 / 01期

关键词：

2D QHAF; spin-phonon interaction; the EPR linewidth;

D O I：

10.1023/A:1007765402097

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The spin-phonon interaction is derived for Cu2+ ions strongly coupled by the isotropic exchange interaction. It is shown that in a two-dimensional quantum Heisenberg antiferromagnetic this interaction due to its antisymmetric structure couples the phonon modes near the wave vectors (+/-pi/a, +/-pi/a) to the staggered magnetization. A contribution of the spin-phonon interaction to the EPR linewidth is calculated and its temperature dependence compared with other sources of the broadening.

引用

页码：53 / 55

页数：3

共 8 条

[1]

Abragam A., 1970, ELECT PARAMAGNETIC R

[2] ANTISYMMETRIC EXCHANGE AND EXCHANGE-NARROWED ELECTRON-PARAMAGNETIC-RESONANCE LINEWIDTHS [J].