Spin-Wave Mode of Classical Heisenberg Model at High Temperature
1983 年 52 巻 10 号 p. 3592-3601
詳細
1983 年 52 巻 10 号 p. 3592-3601
Spin dynamics calculation shows that the ferromagnetic Heisenberg model at high temperature has a broad spin wave mode near the zone boundary in dynamical correlation function. This peak is explained as the Larmor precession in random field. A simple approximation for this mode is given.
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