MAGNETOELASTIC DISSIPATION IN MACROSCOPIC MAGNETIZATION TUNNELING

被引：49
|
作者：
GARG, A
KIM, GH
机构：
[1] Department of Physics and Astronomy, Northwestern University, Evanston
来源：
PHYSICAL REVIEW B | 1991年 / 43卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.43.712
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The tunneling of the total magnetization of a small (approximately 100 angstrom) magnetic particle out of a metastable easy direction is a promising candidate for macroscopic quantum tunneling. It is shown that the coupling of the magnetization to the phonons is an extremely weak source of dissipation that does not reduce the tunneling rate. A model in which the magnetic particle is embedded in a solid medium is considered, and the spectral density is derived for various crystal symmetries.
引用
收藏
页码：712 / 718
页数：7
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