Ballistic transfer of spin momentum in multiferroic tunnel junction

The field dependence of critical voltages of switching of magnetic states of a synthetic multiferroic structure is studied based on a bifurcation analysis of Landau–Lifshitz–Gilbert equations with the torques caused by a tunneling spin transport, taking into account the voltage dependence of transfe...

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Bibliographic Details
Published in:Bulletin of the Lebedev Physics Institute 2016, Vol.43 (1), p.8-11
Main Authors: Demin, G. D., Popkov, A. F., Zvezdin, A. K., Knizhnik, A. A.
Format: Article
Language:English
Subjects:
Physics
Physics and Astronomy
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Summary:The field dependence of critical voltages of switching of magnetic states of a synthetic multiferroic structure is studied based on a bifurcation analysis of Landau–Lifshitz–Gilbert equations with the torques caused by a tunneling spin transport, taking into account the voltage dependence of transferred spin momenta at the variations in the magnitude and direction of electric polarization. The voltage dependences of transferred spin momenta are determined based on the free electron model, taking into account exchange splitting of electron energy subbands in magnetic beaches and the effect of changing the tunnel barrier height at the variations in the polarization magnitude and state.
ISSN:1068-3356
1934-838X
DOI:10.3103/S1068335616010036