Domain-wall free energy in Heisenberg ferromagnets

被引：5

作者：

Sangiorgio, Boris ^{[1
]}

Michaels, Thomas C. T. ^{[2
]}

Pescia, Danilo ^{[3
]}

Vindigni, Alessandro ^{[3
]}

机构：

[1] Swiss Fed Inst Technol, Dept Mat, CH-8093 Zurich, Switzerland

[2] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[3] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

SINGLE-CHAIN MAGNETS; STATISTICAL-MECHANICS; PHASE-DIAGRAM; DRIVEN; MOTION; DYNAMICS; SURFACE; FIELD; MAGNETIZATION; EXCITATION;

D O I：

10.1103/PhysRevB.89.014429

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We consider Gaussian fluctuations about domain walls embedded in one-or two-dimensional spin lattices. Analytic expressions for the free energy of one domain wall are obtained. From these, the temperature dependence of experimentally relevant spatial scales-i.e., the correlation length for spin chains and the size of magnetic domains for thin films magnetized out of plane-are deduced. Stability of chiral order inside domain walls against thermal fluctuations is also discussed.

引用

页数：19

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