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Pis'ma v Zh. Èksper. Teoret. Fiz., 2002, Volume 76, Issue 3, Pages 189–193 (Mi jetpl2883)  

This article is cited in 13 scientific papers (total in 13 papers)


Spin-injection mechanism of magnetization reversal and hysteresis of current in magnetic junctions

Yu. V. Gulyaeva, P. E. Zil'bermana, E. M. Epshteina, R. J. Elliottb

a Institute of Radioengineering and Electronics of Russian Academy of Sciences, Fryazino Department
b University of Oxford, Department of Physics, Theoretical Physics

Abstract: A novel mechanism is proposed for magnetization reversal by the current of magnetic junctions with two metallic ferromagnetic layers and thin separating nonmagnetic layer. The spin-polarized current flows perpendicularly to the interfaces between the ferromagnetic layers, in one of which the spins are pinned and in the other they are free. No domain structure is formed in the ferromagnetic layers. The current breaks spin equilibrium in the free layer, which manifests itself in the injection or extraction of spins. The nonequilibrium spins interact with the magnetization of the lattice due to the effective field of $s-d$ exchange, which is current dependent. At currents exceeding a certain threshold value, this interaction leads to magnetization reversal. Two threshold currents for magnetization reversal have been obtained theoretically, which are reached as the current increases or decreases, respectively. Thus, the phenomenon of current hysteresis is found. The calculated results are in good agreement with experiments on magnetization reversal by current in three-layer junctions of composition Co(I)/Cu/Co(II) prepared in a pillar form.

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English version:
Journal of Experimental and Theoretical Physics Letters, 2002, 76:3, 155–159

Document Type: Article
PACS: 75.60.Ej, 75.70.Pa
Received: 19.06.2002

Citation: Yu. V. Gulyaev, P. E. Zil'berman, E. M. Epshtein, R. J. Elliott, “Spin-injection mechanism of magnetization reversal and hysteresis of current in magnetic junctions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 76:3 (2002), 189–193; JETP Letters, 76:3 (2002), 155–159

Citation in format AMSBIB
\by Yu.~V.~Gulyaev, P.~E.~Zil'berman, E.~M.~Epshtein, R.~J.~Elliott
\paper Spin-injection mechanism of magnetization reversal and hysteresis of current in magnetic junctions
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2002
\vol 76
\issue 3
\pages 189--193
\jour JETP Letters
\yr 2002
\vol 76
\issue 3
\pages 155--159

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    This publication is cited in the following articles:
    1. Yu. V. Gulyaev, P. E. Zil'berman, E. M. Epshtein, R. J. Elliott, “Current-induced domain formation in magnetic junctions”, JETP Letters, 79:9 (2004), 402–406  mathnet  crossref  adsnasa
    2. JETP Letters, 82:5 (2005), 306–310  mathnet  crossref  isi
    3. JETP Letters, 84:6 (2006), 344–347  mathnet  crossref  isi
    4. JETP Letters, 86:5 (2007), 328–332  mathnet  crossref  isi
    5. JETP Letters, 85:3 (2007), 160–164  mathnet  crossref  isi
    6. Yu. V. Gulyaev, P. E. Zil'berman, E. M. Epshtein, “Nano-sized structures incorporating ferromagnetic metal layers: new effects due to the passage of a perpendicular current”, Phys. Usp., 51:4 (2008), 409–412  mathnet  crossref  crossref  adsnasa
    7. Yu. V. Gulyaev, P. E. Zil'berman, A. I. Panas, E. M. Epshtein, “Spintronics: exchange switching of ferromagnetic metallic junctions under low current density”, Phys. Usp., 52:4 (2009), 335–343  mathnet  crossref  crossref  adsnasa  isi
    8. Gulyaev Yu.V., Zilberman P.E., Chigarëv S.G., Epshtein E.M., “Obmennoe pereklyuchenie magnitnogo perekhoda impulsom toka”, Radiotekhnika i elektronika, 56:6 (2011), 733–736  elib
    9. Kukharev A.V., Danilyuk A.L., Borisenko V.E., “Kolebaniya namagnichennosti v nanostrukture ferromagnetik/nemagnitnyi metall/ferromagnetik pod deistviem polyarizovannogo po spinu toka”, Mikroelektronika, 41:1 (2012), 9–9  elib
    10. Gulyaev Yu.V., Zilberman P.E., Epshtein E.M., “Vliyanie toka na dinamiku namagnichennosti v sisteme ferromagnetik/antiferromagnetik. chislennoe modelirovanie”, Radiotekhnika i elektronika, 57:5 (2012), 558–558  elib
    11. Gulyaev Yu.V., Zilberman P.E., Kotov V.D., Mikhailov G.M., Chigarëv S.G., Epshtein E.M., “Sozdavaemyi tokom rezonans v perekhodakh ferromagnetik/antiferromagnetik”, Radiotekhnika i elektronika, 57:8 (2012), 888–888  elib
    12. Gulyaev Yu.V. Zil'berman P.E. Chigarev S.G., “Spin-Injection Generators of Terahertz Waves Based on Metal Magnetic Structures”, J. Commun. Technol. Electron., 60:5 (2015), 411–435  crossref  isi  elib  scopus
    13. Vilkov E.A. Dyuzhikov I.N. Zaitsev-Zotov S.V. Logunov M.V. Nikitov S.A. Safonov S.S. Chigarev S.G., “Generation of Terahertz Radiation Spectra By Radiation Sources Based on Solid-State Micro- and Nanostructures and Detection of Terahertz Spectra”, J. Commun. Technol. Electron., 63:9 (2018), 1015–1026  crossref  isi  scopus
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