| Four-sublattice ferrimagnetic systems: I. Quantum fluctuations of spins at zero temperature |
| R. K. Qiu; Z. D. Zhang
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| 2004
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| 发表期刊 | Physica Status Solidi B-Basic Research
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| ISSN | 0370-1972
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| 卷号 | 241期号:1页码:189-204 |
| 摘要 | Within the framework of the linear spin wave approximation, the quantum fluctuations of spins at zero temperature in four-sublattice ferrimagnetic systems are studied by employing retard Green's functions. The effects of exchange constants on the quantum fluctuations of spins are discussed for three different spin-configurations. The magnetic properties of these spin configurations are related to their magnetically structural symmetry. When the parameters of the exchange couplings are adjusted, the crossover of the spin configurations results in the strong quantum fluctuations, owing to the behaviors of the non-three-dimensional magnetically system. When two of the four exchange-constants in the present four-sublattice bulk systems are set to be zero, the system behaves as a non-three-dimensionally magnetic system, although the structure of the system is still three-dimensional. All the exchange couplings involve in the quantum competition of the systems, but the effects of antiferromagnetic and ferromagnetic exchange couplings are different evidently. The antiferromagnetic exchange couplings play an important role in a balance of the quantum competition. |
| 部门归属 | chinese acad sci, shenyang natl lab mat sci, met res inst, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. shenyang univ technol, coll sci, shenyang 110023, peoples r china.;qiu, rk (reprint author), chinese acad sci, shenyang natl lab mat sci, met res inst, shenyang 110016, peoples r china;zdzhang@imr.ac.cn
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| 关键词 | Heisenberg-antiferromagnet
3-layer Superlattices
Magnetic-structures
Phase-transition
Internal Energy
Ferromagnet
Lattice
Magnetoresistance
3-sublattice
Dependence
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| URL | 查看原文
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| WOS记录号 | WOS:000188585200024
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://ir.imr.ac.cn/handle/321006/35524
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| 专题 | 中国科学院金属研究所
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推荐引用方式
GB/T 7714 |
R. K. Qiu,Z. D. Zhang. Four-sublattice ferrimagnetic systems: I. Quantum fluctuations of spins at zero temperature[J]. Physica Status Solidi B-Basic Research,2004,241(1):189-204.
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| APA |
R. K. Qiu,&Z. D. Zhang.(2004).Four-sublattice ferrimagnetic systems: I. Quantum fluctuations of spins at zero temperature.Physica Status Solidi B-Basic Research,241(1),189-204.
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| MLA |
R. K. Qiu,et al."Four-sublattice ferrimagnetic systems: I. Quantum fluctuations of spins at zero temperature".Physica Status Solidi B-Basic Research 241.1(2004):189-204.
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