FRONT PROPAGATION INTO AN UNSTABLE FERROMAGNETIC STATE

被引：6

作者：

ELMER, FJ ^{[1
]}

BURNS, J ^{[1
]}

SUHL, H ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,INST PURE & APPL PHYS SCI,SAN DIEGO,CA 92103

来源：

EUROPHYSICS LETTERS | 1993年 / 22卷 / 06期

关键词：

D O I：

10.1209/0295-5075/22/6/001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study analytically and numerically the unusual propagation of a stable spatially periodic state into an unstable spatially periodic state of an easy-plane ferromagnet. If the wave number of the unstable state exceeds a certain threshold, the front between the stable and the unstable state expands and builds up three well-separated fronts traveling with different velocities. With the help of the marginal-stability hypothesis we are able to calculate analytically front velocities and intermediate states. These results agree quantitatively very well with numerical simulations.

引用

页码：399 / 404

页数：6

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