The spin-s quantum Heisenberg ferromagnetic models in the physical magnon theory | |
Liu, BG ; Pu, FC | |
刊名 | JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
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2001 | |
卷号 | 231期号:2-3页码:307 |
关键词 | MAGNETIC EXCITATIONS ZERO TEMPERATURE ANTIFERROMAGNET |
ISSN号 | 0304-8853 |
通讯作者 | Liu, BG (reprint author), Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
中文摘要 | The spin-s quantum Heisenberg ferromagnetic model is investigated in the physical magnon theory. The effect of the extra unphysical magnon states on every site is completely removed in the magnon Hamiltonian and during approximation procedure so that the condition = 0(n greater than or equal to 2s + 1) is rigorously satisfied. The physical multi-approximation occupancy (1 less than or equal to n less than or equal to 2s) is proportional to T-3n/2 at low temperature and is equivalent to 1/(2s + 1) at the Curie temperature. The magnetization not only unified but also well-behaved from zero temperature to Curie temperature is obtained in the framework of the magnon theory for the spin-s quantum Heisenberg ferromagnetic model. The ill-behaved magnetizations at high temperature in earlier magnon theories are completely corrected. The relation of magnon (spin wave) theory with spin-operator decoupling theory is clearly understood. (C) 2001 Elsevier Science B.V. All rights reserved. |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2013-09-23 |
内容类型 | 期刊论文 |
源URL | [http://ir.iphy.ac.cn/handle/311004/45476] ![]() |
专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
推荐引用方式 GB/T 7714 | Liu, BG,Pu, FC. The spin-s quantum Heisenberg ferromagnetic models in the physical magnon theory[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2001,231(2-3):307. |
APA | Liu, BG,&Pu, FC.(2001).The spin-s quantum Heisenberg ferromagnetic models in the physical magnon theory.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,231(2-3),307. |
MLA | Liu, BG,et al."The spin-s quantum Heisenberg ferromagnetic models in the physical magnon theory".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 231.2-3(2001):307. |
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