Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice

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	Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice
	R. K. Qiu; J. Liang; Q. F. Li; Z. D. Zhang; P. P. Song; X. M. Hong
	2009
发表期刊	Physica B-Condensed Matter
ISSN	0921-4526
卷号	404 期号:8-11 页码:1295-1300
摘要	The magnon energy bands or spectra in a two-layer ferromagnetic superlattice are studied. It is found that a modulated energy gap exists in the magnon energy band along K(x) direction perpendicular to the superlattice plane, which is different from the optical magnon gap at K(x) = 0. The anisotropy, the spin quantum numbers and the interlayer exchange couplings all affect the magnon energy gap. If the anisotropy exists, there will be no acoustic energy branch in the system. There is a competition effect of the anisotropy and the spin quantum number on the magnon energy gap. The competition achieves a balance at the zero energy gap, at which the symmetry of the system is higher. The two energy spectra of the two-layer ferromagnetic superlattice are lowered with increasing temperature. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[qiu, rong-ke; liang, jing; li, qing-feng; song, pan-pan; hong, xiao-min] shenyang univ technol, shenyang 110023, peoples r china. [qiu, rong-ke; zhang, zhi-dong] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [qiu, rong-ke; zhang, zhi-dong] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;qiu, rk (reprint author), shenyang univ technol, shenyang 110023, peoples r china;rkqiu@163.com
关键词	Ferromagnetic Superlattice Magnon Energy Gap Anisotropy Spin Quantum Numbers Interlayer Exchange Couplings Symmetry Of The System Layered Magnetic-structures Spin-waves Exchange Magnetoresistance Multilayers Composites Bilayer
URL	查看原文
WOS记录号	WOS:000265886100049
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32246
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	R. K. Qiu,J. Liang,Q. F. Li,et al. Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice[J]. Physica B-Condensed Matter,2009,404(8-11):1295-1300.
APA	R. K. Qiu,J. Liang,Q. F. Li,Z. D. Zhang,P. P. Song,&X. M. Hong.(2009).Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice.Physica B-Condensed Matter,404(8-11),1295-1300.
MLA	R. K. Qiu,et al."Effect of anisotropy on the magnon energy gap in a two-layer ferromagnetic superlattice".Physica B-Condensed Matter 404.8-11(2009):1295-1300.