The mattis random magnet as an isotopically disordered harmonic crystal
The mattis random magnet as an isotopically disordered harmonic crystal
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作为同位素无序谐波晶体的马蒂斯随机磁体
DOI：
10.1007/bf01295070
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发表时间：
1980
期刊：
影响因子：
--
通讯作者：
J. L. Hemmen
中科院分区：
文献类型：
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作者：
J. L. Hemmen
研究了Heisenberg-Mattis无规铁磁体中的元激发。将原问题映射为经典问题，即确定质量为正负1的同位素无序谐振晶体的本征频率和本征模，从而得到了一个解。后一个问题更容易进行精确的分析。与以前的工作相比，我们发现很少有证据表明，自旋波确实存在于一维。
The elementary excitations in a Heisenberg-Mattis random ferromagnet are studied. A solution is obtained by mapping the original problem onto a classical one, viz. determining the eigenfrequencies and eigenmodes of an isotopically disordered harmonic crystal with masses plus and minus one. The latter problem is much more amenable to an exact analysis. In contrast to previous work we find little evidence that spin waves do exist in one dimension.