Exchange switching of a magnetic junction by a current pulse

Gulyaev, Yu. V.; Zilberman, P. E.; Chigarev, S. G.; Épshteǐn, É. M.

doi:10.1134/s1064226911050068

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2011

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“…It seems promising, also, using magnetic junction of ferromagnet-antiferromagnet type, in which the ferromagnet (FM) acts as an injector of spin-polarized electrons. The antiferromagnetic (AFM) layer, in which the magnetic sublattices are canted by external magnetic field, may have very low magnetization that promotes low threshold [11]. The AFM resonance frequency may be both low and high reaching 10 12 s −1 , i.e.…”

Section: Introductionmentioning

confidence: 99%

Current effect on magnetization oscillations in a ferromagnet - antiferromagnet junction

Epshtein,

Gulyaev,

Zilberman

2011

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Spin-polarized current effect is studied on the static and dynamic magnetization of the antiferromagnet in a ferromagnet-antiferromagnet junction. The macrospin approximation is generalized to antiferromagnets. Canted antiferromagnetic configuration and resulting magnetic moment are induced by an external magnetic field. The resonance frequency and damping are calculated, as well as the threshold current density corresponding to instability appearance. A possibility is shown of generating low-damping magnetization oscillations in terahertz range. The fluctuation effect is discussed on the canted antiferromagnetic configuration.

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Section: Introductionmentioning

confidence: 99%