Switching phenomena in magnetic vortex dynamics

被引：15
作者：
Gaididei, Y. B. [1 ]
Kravchuk, V. P. [2 ]
Sheka, D. D. [2 ]
Mertens, F. G. [3 ]
机构：
[1] Inst Theoret Phys, UA-03680 Kiev, Ukraine
[2] Natl Taras Shevchenko Univ Kiev, UA-03127 Kiev, Ukraine
[3] Univ Bayreuth, Inst Phys, D-95440 Bayreuth, Germany
来源：
LOW TEMPERATURE PHYSICS | 2008年 / 34卷 / 07期
关键词：
D O I：
10.1063/1.2957013
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A magnetic nanoparticle in a vortex state is a promising candidate for information storage. One bit of information corresponds to the upward or downward magnetization of the vortex core (vortex polarity). The generic properties of the vortex polarity switching are insensitive to the way that the vortex dynamics has been excited: by an ac magnetic field, or by an electrical current. We study theoretically the switching process and describe in detail its mechanism, which involves the creation and annihilation of an intermediate vortex-antivortex pair. (C) 2008 American Institute of Physics.
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页码：528 / 534
页数：7
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