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物理学报. 2007, 56(9): 5466-5470.
doi: 10.7498/aps.56.5466.
海森伯铁磁系统的总能量
- 收稿日期: 2007-01-12
- 修回日期: 2007-02-02
- 刊出日期: 2007-09-20
English Abstract
The total energy of Heisenberg ferromagnetic systems
- Received Date:
12 January 2007
- Accepted Date:
02 February 2007
- Published Online:
20 September 2007
Abstract: The total energy of the Heisenberg ferromagnetic system is calculated by the many-body Green's function method under random phase approximation when the correlation function 〈S+S-〉 is considered. A general expression of the total energy universally applicable to any spin quantum number S is obtained. Numerical results are computed. The energy is lower than the case when the correlation function is not included.
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