Current Assisted Magnetization Switching in (Ga,Mn)As Nanodevices
نویسندگان
چکیده
منابع مشابه
Memory effects in photoinduced femtosecond magnetization rotation in ferromagnetic GaMnAs
in ferromagnetic GaMnAs J. Wang, I. Cotoros, D. S. Chemla, X. Liu, J. K. Furdyna, J. Chovan, and I. E. Perakis Department of Physics and Astronomy and Ames Laboratory-USDOE, Iowa State University, Ames, Iowa 50011, USA Department of Physics and Materials Sciences Division, E.O. Lawrence Berkeley National Laboratory, University of California at Berkeley, Berkeley, California 94720, USA Departmen...
متن کاملOn a Model of Magnetization Switching by Spin-polarized Current
This paper is concerned with global existence of weak solutions to a model equations of magnetization reversal by spin-polarized current in a layer introduced in [18]. The local magnetization of the ferromagnet satisfies the usual Landau-Lifshitz equation which is coupled to the nonlinear heat equation satisfied by the spin accumulation field defined in all the layer. The coupling is due to the...
متن کاملMechanisms of spin-polarized current-driven magnetization switching.
The mechanisms of the magnetization switching of magnetic multilayers driven by a current are studied by including exchange interaction between local moments and spin accumulation of conduction electrons. It is found that this exchange interaction leads to two additional terms in the Landau-Lifshitz-Gilbert equation: an effective field and a spin torque. Both terms are proportional to the trans...
متن کاملRelaxing-Precessional Magnetization Switching
A new way of magnetization switching employing both the spin-transfer torque and the torque by a magnetic field is proposed. The solution of the Landau-Lifshitz-Gilbert equation shows that the dynamics of the magnetization in the initial stage of the switching is similar to that in the precessional switching, while that in the final stage is rather similar to the relaxing switching. We call the...
متن کاملMagnetization Dynamics Symmetry in Spin Torque Induced Magnetization Switching
Magnetization dynamics symmetry plays important roles in magnetization switching. Here we study magnetic field and spin torque induced magnetization switching. Spin moment transferring from polarized itinerant electrons to local magnetization provides a magnetization switching mechanism without using external magnetic field. Besides its importance in fundamental magnetization switching dynamics...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Journal of Applied Physics
سال: 2006
ISSN: 0021-4922,1347-4065
DOI: 10.1143/jjap.45.3860