Calculation of spin transfer torque in partially polarized spin valves including multiple reflections

Hernández, Stephanie; Victora, R. H.
August 2010
Applied Physics Letters;8/9/2010, Vol. 97 Issue 6, p062506
Academic Journal
An analytic expression that includes the effect of multiple reflections within the interface of a spin-valve composed of materials with partial spin polarization was obtained. Inclusion of this term in a micromagnetic calculation demonstrates the effect of the spin polarization of the magnetic material on the current induced behavior of the structure. We show that neglecting to include interfacial scattering events results in an underestimation of the switching current compared to the method detailed in this letter. Multiple reflections also produce a strong dependence of the switching current on the magnetocrystalline anisotropy of the fixed layer.


Related Articles

  • Polarization selection due to scattering losses in nonaxisymmetric vertical cavity surface emitting laser cavities. Riyopoulos, S.; Nhan, E. // Applied Physics Letters;10/11/2004, Vol. 85 Issue 15, p3038 

    A theoretical explanation is offered for the polarization pinning in vertical cavity surface emitting laser cavities with deliberately imposed lack of axisymmetry. The analytic computation of scattering losses shows that, for medium to small aperture sizes, differentiation in modal Q’s...

  • Dielectric response of polar liquids in narrow slit pores. Froltsov, Vladimir A.; Klapp, Sabine H. L. // Journal of Chemical Physics;3/21/2007, Vol. 126 Issue 11, p114703 

    Based on molecular dynamics (MD) simulations and a simple (Stockmayer) model we investigate the static and dynamic dielectric response of polar liquids confined to narrow slit pores. The MD simulations are used to calculate the time-dependent polarization fluctuations along directions parallel...

  • On non-singular solutions in multidimensional cosmology. Melnikov, V. N. // AIP Conference Proceedings;5/18/2009, Vol. 1132 Issue 1, p429 

    Exact solutions with an exponential behaviour of the scale factors are considered in a multidimensional cosmological model describing the dynamics of n+1 Ricci-flat factor spaces Mi in the presence of a one-component perfect fluid. The pressures in all spaces are proportional to the density: pi...

  • Laser performance and thermal lensing in flashlamp pumped Np-cut and Ng-cut Nd:KGW crystals. Loiko, P. A.; Denisov, I. A.; Yumashev, K. V.; Kuleshov, N. V.; Pavlyuk, A. A. // Applied Physics B: Lasers & Optics;Sep2010, Vol. 100 Issue 3, p477 

    A comparative experimental study of laser performance and thermal lensing properties in a flashlamp pumped Nd:KGW crystal cut for the light propagating along the optical indicatrix axes Np and Ng is presented. It was found that for both, the Np-cut Nd:KGW and Ng-cut Nd:KGW thermal lens is...

  • Exploring the nucleon helicity structure with pp collisions. Deshpande, Abhay // AIP Conference Proceedings;2007, Vol. 915 Issue 1, p76 

    After a brief history of nucleon spin crisis I will motivate the need for a high energy polarized proton collider. I will then describe the distinct advantages of this new facility to study the spin structure of the proton. I will highlight the recent achievements of the RHIC Spin program from...

  • Scattering and depolarization of linearly polarized waves by finitely conducting particles of irregular shape. Bahar, Ezekiel; Fitzwater, Mary Ann // Journal of Applied Physics;9/15/1986, Vol. 60 Issue 6, p2123 

    Presents a study that investigated the scattering and depolarization of linearly polarized waves by a random distribution of finitely conducting particles of irregular shape. Values of parameters for the surface height spectral density function, wavelength, dielectric coefficient and diameter...

  • On the interrelation of the characteristic scales of depolarization and decorrelation of optical fields under multiple-scattering conditions. Zimnyakov, D. A.; Tuchin, V. V. // JETP Letters;4/10/98, Vol. 67 Issue 7, p476 

    The interrelation of depolarization and decorrelation of optical fields in multiply scattering Brownian media is studied on the basis of the notion of the probability density of optical path lengths of the partial components of the scattered field under multiple-scattering conditions. To...

  • Dispersion Relations in Virtual Compton Scattering. Pasquini, B.; Drechsel, D.; Gorchtein, M.; Metz, A.; Vanderhaeghen, M. // AIP Conference Proceedings;2003, Vol. 675 Issue 1, p646 

    We describe the application of a dispersion-relation formalism to the virtual Compton scattering (VCS) reaction with the aim to extract information on generalized polarizabilities from VCS observables over a large energy range. © 2003 American Institute of Physics

  • Recent Measurements of Longitudinal and Transverse Unpolarized Structure Functions, and Their Impact on Spin Asymmetry Measurements. Keppel, C.E. // AIP Conference Proceedings;2003, Vol. 675 Issue 1, p294 

    New measurements are presented of the separated longitudinal and transverse proton structure functions in the nucleon resonance region (1 < W2 < 4 GeV2), spanning the four-momentum transfer range 0.2 < Q2 < 4.0 (GeV/c)2. The results are from Jefferson Lab experiment E94-110, which measured...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics