PL EN


Preferences help
enabled [disable] Abstract
Number of results
2007 | 112 | 6 | 1267-1270
Article title

Current-Driven Magnetoresistance Oscillations in Asymmetric Spin Valves

Authors
Content
Title variants
Languages of publication
EN
Abstracts
EN
Within the macroscopic model we have calculated spin-transfer torque in asymmetric spin valves in the diffusive transport limit.Such systems exhibit a non-standard angular dependence of the torque, which leads to current-induced precessional modes at zero external magnetic field. We have found that the frequency of magnetoresistance oscillations exhibits hysteretic behavior when the system is driven between two steady precessional regimes. A finite temperature can suppress the irreversibility and give rise to bistable regime where, both the precessional regimes coexist.
Keywords
EN
Contributors
author
  • Department of Theoretical Physics and Astrophysics, P.J. Š afárik University, Park Angelinum 9, 040 01 KoŠ ice, Slovak Republic
  • Institute for Theoretical Physics, University of Regensburg, 93040 Regensburg, Germany
author
  • Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
  • Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland
References
  • 1. J.C. Slonczewski, J. Magn. Magn. Mater., 159, L1 (1996); 195, L261, (1999); L. Berger, Phys. Rev. B 54, 9353, (1996)
  • 2. J.A. Katine, F.J. Albert, R.A. Buhrman, E.B. Myers, D.C. Ralph, Phys. Rev. Lett., 84, 3149 (2000). M. Tsoi, V. Tsoi, J. Bass, Phys. Rev. Lett. 89, 246803, (2002)
  • 3. S.I. Kiselev, J.C. Sankey, I.N. Krivorotov, N.C. Emley, R.J. Schoelkopf, R.A. Buhrman, D.C. Ralph, Nature 425, 380, (2003)
  • 4. D. Houssameddine, U. Ebels, B. Delat, B. Rodmacq, I. Firastrau, F. Ponthenier, M. Brunet, C. Thirion, J.-P. Michel, L. Prejbeanu-Buda, M.C. Cyrille, O. Redon, B. Dieny,Nature Mater. 6, 447453, (2007)
  • 5. M. Gmitra, J. BarnaŚ, Phys. Rev. Lett. 96, 207205, (2006)
  • 6. J. BarnaŚ, A. Fert, M. Gmitra, I. Weymann, V.K. Dugaev, Phys. Rev. B) 72, 024426, (2005)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv112n612kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.