Resonant magnetoresistance in the vicinity of a phase transition

被引：0
|
作者：
V. A. Atsarkin
V. V. Demidov
机构：
[1] Russian Academy of Sciences,Kotel’nikov Institute of Radio Engineering and Electronics
来源：
Journal of Experimental and Theoretical Physics | 2013年 / 116卷
关键词：
Manganite; Microwave Power; Curie Point; Colossal Magnetoresistance; Electron Paramagnetic Reso;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The change in the electrical conductivity of manganite films upon microwave pumping in the magnetic resonance conditions is investigated. The temperature dependence of the effect correlates with the temperature variation of colossal magnetoresistance (CMR), passing through a maximum at the Curie point. The results are interpreted using a model that assumes a decrease in the absolute value |M| of the magnetic moment of the sample under the action of magnetoresonant saturation, which leads to an increase in resistance in accordance with the CMR mechanism. Theoretical analysis based on the Landau-Lifshitz-Bloch equation confirms the correctness of this model and ensures good agreement with experiment.
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页码：95 / 100
页数：5
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