Longitudinal Susceptibility of S = 1/2 Low-Dimensional Heisenberg Ferromagnet in a Magnetic Field
Longitudinal Susceptibility of S = 1/2 Low-Dimensional Heisenberg Ferromagnet in a Magnetic Field
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DOI：
10.1088/0253-6102/49/5/56
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发表时间：
2008-05
影响因子：
3.1
通讯作者：
C. Yuan;X. Ying;Ai-Yuan Hu
中科院分区：
文献类型：
--
作者：
C. Yuan;X. Ying;Ai-Yuan Hu
在随机位相近似下，用格林函数方法研究了自旋为1/2的低维海森堡铁磁体在磁场中的纵向磁化率。计算了低场区和高场区的静态和动态纵向磁化率。静态磁化率极大值位置和高度的幂定律并不支持朗道理论的预言。
Longitudinal susceptibility of the spin-1/2 low-dimensional Heisenberg ferromagnet in a magnetic field, is studied by the Green's function method within the random phase approximation. The static and dynamic longitudinal susceptibilities are calculated in the low- and high-field regions. Power laws for the position and height of the static susceptibility maximum are shown not to support the predictions of Landau theory.