THEORY OF FERRO- AND ANTIFERROMAGNETIC RESONANCE IN SOLIDS CONTAINING IONS OF COMPLICATED LEVEL STRUCTURE

被引:7
作者
ALBEN, R
机构
[1] Mason Laboratory, Yale University, New Haven, CT
来源
PHYSICAL REVIEW | 1969年 / 184卷 / 02期
关键词
D O I
10.1103/PhysRev.184.495
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The time-dependent molecular-field (TDMF) approach to magnetic resonance is described and illustrated with six examples. For the simplest models, the random-phase approximation of TDMF is equivalent to Tyablikov spin waves. However, whereas Green's function and spin-wave techniques are forced into same-site decorrelation approximations when confronted with complicated single-ion dynamics, TDMF is general enough to include any single-ion terms without difficulty. Ions appear as coupled oscillators whose allowed transitions are pulled in forming collective modes. The procedure, being quite general, is readily automated and is thus convenient in actual calculations for physical problems. © 1969 The American Physical Society.
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页码:495 / &
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