Magnetic Properties of Heisenberg Thin Films in an External Field

被引：0

作者：

CHEN Hong ZHANG Jing School of PhysicsSouthwest China Normal UniversityChongqing China ^{[400715
]}

机构：

来源：

Communications in Theoretical Physics | 2004年 / 42卷 / 11期

关键词：

thin film; Heisenberg ferromagnet; variational-cumulant expansion;

D O I：

暂无

中图分类号：

O413 [量子论];

学科分类号：

070201 ;

摘要：

<正> The magnetic properties of Heisenberg ferromagnetic films in an external magnetic field are investigatedby means of the variational cumulant expansion (VCE).The magnetization can be in principle calculated analyticallyas the function of the temperature and the number of atomic layers in the film to an arbitrary order of accuracy in theVCE.We calculate the spontaneous magnetization and coercivity to the third order for spin-l/2 Heisenberg films withsimple cubic lattices by using a graphic technique.

引用

页码：768 / 772

页数：5

共 13 条

[1]

C.B.Peng,et al. Journal of Applied Physiology . 1992

[2]

Q.Hong. Physical Review B Condensed Matter and Materials Physics . 1990

[3]

Q.Hong. Physical Review B Condensed Matter and Materials Physics . 1992

[4]

D.L.Lin,H.Che,Y.Xia. Physical Review A Atomic Molecular and Optical Physics . 1992

[5]

ZHENG X T,Tan Z G,Wang J.Variational-cumulant expansion in lattice gauge theory. Nuclear Physics B Particle Physics . 1987

[6]

X.T.Zheng,C.I.Tan,T.L.Chen. Phys.Rev.D . 1982

[7]

H.Chen,R.L.Zheng. Acta Physica Sinica . 2000

[8]

D.L.Lin,H.Che,W.Lai,et al. Physical Review E Statistical Nonlinear and Soft Matter Physics . 1994

[9]

H.Chen,Y.L.Yan,H.Mei. Acta Physica Sinica . 2003

[10]

T.Hai,Z.Y.Li. Phys.Stat.Sol. (b) . 1989

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