Effect of spin current on uniform ferromagnetism: domain nucleation.
نویسندگان
چکیده
A large spin current applied to a uniform ferromagnet leads to a spin-wave instability as pointed out recently. In this Letter, it is shown that such spin-wave instability is absent in a state containing a domain wall, which indicates that nucleation of magnetic domains occurs above a certain critical spin current. This scenario is supported also by an explicit energy comparison of the two states under spin current.
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عنوان ژورنال:
- Physical review letters
دوره 94 7 شماره
صفحات -
تاریخ انتشار 2005