ELECTRON SPIN RESONANCE AS A PROBE OF COLLECTIVE MODES IN ANISOTROPIC EXCHANGE-COUPLED PARAMAGNETS

被引：15

作者：

Huber, D. L. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

MODERN PHYSICS LETTERS B | 2012年 / 26卷 / 29期

关键词：

Electron spin resonance; exchange-coupled paramagnet; collective modes; g-factors;

D O I：

10.1142/S0217984912300219

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Electron spin resonance (ESR) in exchanged-coupled paramagnets is a probe of field-dependent collective modes in a strongly coupled many-body system. We utilize a previously developed approach for the analysis of collective modes in such systems to express the experimentally determined g-factors of the ESR modes in an anisotropic magnet in terms of the microscopic (isolated spin) g-factors and the ratios of the static susceptibilities along the principal directions. Applications of the theory to the ferromagnetic insulator CrBr3 and the Kondo lattice systems YbRh2Si2, YbCo2Si2, YbIr2Si2 and CeRuPO are discussed.

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页数：11

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