On the mechanism of hysteresis in conductance of point contacts to single ferromagnetic films

被引：2
|
作者：
Konovalenko, A. [1 ]
Korenivski, V.
Yanson, I. K.
Naidyuk, Yu. G.
Fisun, V. V.
Balkashin, O. P.
Triputen, L. Yu.
机构：
[1] Royal Inst Technol, S-10691 Stockholm, Sweden
[2] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & engn, UA-61103 Kharkov, Ukraine
来源：
JOURNAL OF APPLIED PHYSICS | 2007年 / 101卷 / 09期
关键词：
D O I：
10.1063/1.2696709
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Single nonmagnetic/ferromagnetic interfaces can exhibit magnetic excitations and hysteretic switching, provided that the current density traversing the interface is sufficiently high (greater than or similar to 10(8) A/cm(2)) and the flow regime is diffusive. We measure hysteretic switching in conductance induced by nominally unpolarized electron currents in nanocontacts to thin Co films and successfully model the effect for similar to 20 nm scale point contacts using micromagnetic simulations, which take into account an out of plane stress-induced magnetic anisotropy in the point contact region. (C) 2007 American Institute of Physics.
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页数：3
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