Work

Uniform magnetization dynamics of a submicron ferromagnetic disk driven by the spin–orbit coupled spin torque

Year: 2017

Type: article

Abstract: A simple model of magnetization dynamics in a ferromagnet/doped semiconductor hybrid structure with Rashba spin–orbit interaction (SOI), driven by an applied pulse of the electric field, is proposed. The electric current excited by the applied field is spin-polarized, due to the SOI and therefore it induces the magnetization rotation in the ferromagnetic layer via s-d exchange coupling. Magnetization dynamics dependence on the electric pulse shape and magnitude is analyzed for realistic values of the parameters. We show that it is similar to the dynamics of a damped nonlinear oscillator with the time-dependent frequency proportional to the square root of the applied electric field. The magnetization switching properties of an elliptic magnetic element are examined as a function of the applied field magnitude and direction.

Source: Journal of Physics D Applied Physics

DOI: 10.1088/1361-6463/aa7319

Authors: P V Bondarenko, E Ya Sherman

Institutions: National Academy of Sciences, University of the Basque Country, Ikerbasque

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Eusko Jaurlaritza, Euskal Herriko Unibertsitatea, Secretaría de Estado de Investigación, Desarrollo e Innovación

Awards: G1872271803, G2527984402, G3990253267, G891563682, G986962666