Effect of thermal fluctuations in spin-torque driven magnetization dynamics

被引：3
|
作者：
Bonin, R. [1 ]
Bertotti, G.
Serpico, C.
Mayergoyz, I. D.
d'Aquino, M.
机构：
[1] INRiM, I-10135 Turin, Italy
[2] Univ Naples Federico 2, Dipartimento Ingn Elettr, I-80125 Naples, Italy
[3] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 USA
[4] Univ Napoli Parthenope, Dipartimento Tecnol, I-80133 Naples, Italy
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2007年 / 316卷 / 02期
关键词：
spin torque; Landau-Lifshitz-Gilbert equation; thermal fluctuation;
D O I：
10.1016/j.jmmm.2007.03.183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanomagnets with uniaxial symmetry driven by an external field and spin-polarized currents are considered. Anisotropy, applied field, and spin polarization are all aligned along the symmetry axis. Thermal fluctuations are described by adding a Gaussian white noise stochastic term to the Landau-Lifshitz-Gilbert equation for the deterministic dynamics. The corresponding Fokker-Planck equation is derived. It is shown that deterministic dynamics, thermal relaxation, and transition rate between stable states are governed by an effective potential including the effect of current injection. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：E919 / E922
页数：4
相关论文
共 50 条
  • [31] Nonlinear current resonance in a spin-torque diode with planar magnetization
    Kulagin, N. E.
    Skirdkov, P. N.
    Popkov, A. F.
    Zvezdin, K. A.
    Lobachev, A. V.
    LOW TEMPERATURE PHYSICS, 2017, 43 (06) : 708 - 714
  • [32] Intrinsic synchronization of an array of spin-torque oscillators driven by the spin-Hall effect
    Siracusano, G.
    Tomasello, R.
    Puliafito, V.
    Giordano, A.
    Azzerboni, B.
    La Corte, A.
    Carpentieri, M.
    Finocchio, G.
    JOURNAL OF APPLIED PHYSICS, 2015, 117 (17)
  • [33] Precessional spin-torque dynamics in biaxial antiferromagnets
    Parthasarathy, Arun
    Cogulu, Egecan
    Kent, Andrew D.
    Rakheja, Shaloo
    PHYSICAL REVIEW B, 2021, 103 (02)
  • [34] Magnetization switching by spin-torque effect in off-aligned structure with perpendicular anisotropy
    Sbiaa, Rachid
    JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2013, 46 (39)
  • [35] Ideal memristor based on viscous magnetization dynamics driven by spin torque
    Chen, Guanxiong
    Ivanov, Sergei
    Urazhdin, Sergei
    APPLIED PHYSICS LETTERS, 2020, 117 (10)
  • [36] Self-consistent simulation of quantum transport and magnetization dynamics in spin-torque based devices
    Salahuddin, Sayeef
    Datta, Supriyo
    APPLIED PHYSICS LETTERS, 2006, 89 (15)
  • [37] Spin-torque driven ferromagnetic resonance in a nonlinear regime
    Chen, W.
    de Loubens, G.
    Beaujour, J. -M. L.
    Sun, J. Z.
    Kent, A. D.
    APPLIED PHYSICS LETTERS, 2009, 95 (17)
  • [38] Influence of interlayer coupling on the spin-torque-driven excitations in a spin-torque oscillator
    Romera, M.
    Monteblanco, E.
    Garcia-Sanchez, F.
    Delaet, B.
    Buda-Prejbeanu, L. D.
    Ebels, U.
    PHYSICAL REVIEW B, 2017, 95 (09)
  • [39] Current-sweep-rate dependence of spin-torque driven dynamics in magnetic nanopillars
    O'Gorman, B.
    Dietze, S.
    Tsoi, M.
    JOURNAL OF APPLIED PHYSICS, 2009, 105 (07)
  • [40] Damping Dependence of Spin-Torque Effects in Thermally Assisted Magnetization Reversal
    Kalmykov, Y. P.
    Byrne, D.
    Coffey, W. T.
    Dowling, W. J.
    Titov, S. V.
    Wegrowe, J. E.
    IEEE TRANSACTIONS ON MAGNETICS, 2017, 53 (10)
12345