STERN-GERLACH DYNAMICS OF MAGNETIC CLUSTERS

被引：17

作者：

MAITI, A ^{[1
]}

FALICOV, LM ^{[1
]}

机构：

[1] LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.48.13596

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A classical theory of the deflection of a single-domain ferromagnetic cluster in a Stern-Gerlach experiment is presented. Two cases are discussed in detail: (1) superparamagnetic relaxation, in which the thermal fluctuation of the cluster spin occurs on a time scale much smaller than the transit time of the cluster through the Stem-Gerlach apparatus; and (2) anisotropy-induced relaxation, in which the cluster is sufficiently isolated from the thermal bath during its transit through the apparatus so that its dynamics is governed by the interaction of the cluster spin with the anisotropic magnetic forces caused by the lattice and the shape of the cluster. Average spin orientation and average spin rocking during transit, as well as Stem-Gerlach intensity profiles, are presented.

引用

页码：13596 / 13601

页数：6

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