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Ballistic transfer of spin momentum in multiferroic tunnel junction

Bulletin of the Lebedev Physics Institute volume 43, pages 8–11 (2016)Cite this article

Abstract

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.

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Authors and Affiliations

  1. National Research University of Electronic Technology (MIET), pl. Shokhona 1, Zelenograd, Moscow oblast, 124498, Russia

    G. D. Demin & A. F. Popkov

  2. Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow Oblast, 141700, Russia

    A. F. Popkov

  3. Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia

    A. K. Zvezdin

  4. Kintech Lab Ltd., 3-ya Khoroshevskaya ul. 12, Moscow, 123298, Russia

    A. A. Knizhnik

Authors
  1. G. D. Demin
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  2. A. F. Popkov
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  3. A. K. Zvezdin
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  4. A. A. Knizhnik
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Corresponding author

Correspondence to G. D. Demin.

Additional information

Original Russian Text © G.D. Demin, A.F. Popkov, A.K. Zvezdin, A.A. Knizhnik, 2015, published in Kratkie Soobshcheniya po Fizike, 2015, Vol. 42, No. 12, pp. 56–61.

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Demin, G.D., Popkov, A.F., Zvezdin, A.K. et al. Ballistic transfer of spin momentum in multiferroic tunnel junction. Bull. Lebedev Phys. Inst. 43, 8–11 (2016). https://doi.org/10.3103/S1068335616010036

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  • DOI: https://doi.org/10.3103/S1068335616010036

Keywords

  • multiferroic tunnel junction
  • spin torque
  • phase diagram
  • threshold voltage