The equation of motion for a spin vortex and geometric force

被引：10

作者：

Kuratsuji, H ^{[1
]}

Yabu, H ^{[1
]}

机构：

[1] TOKYO METROPOLITAN UNIV,DEPT PHYS,HACHIOJI,TOKYO 192,JAPAN

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1996年 / 29卷 / 20期

关键词：

D O I：

10.1088/0305-4470/29/20/008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The Hamiltonian equation of motion is studied for a vortex occurring in a two-dimensional Heisenberg ferromagnet of anisotropic type by starting with the effective action for the spin field formulated by the Bloch (or spin) coherent state. The resultant equation shows the existence of a geometric force that is analogous to the so-called Magnus force in superfluids. This specific force plays a significant role in the quantum dynamics of a single vortex, for example the determination of the bound state of the vortex trapped by a pinning force arising from the interaction of the vortex with an impurity.

引用

页码：6505 / 6513

页数：9

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