Approximate theory of microwave generation in a magnetic nano-contact driven by a spin-polarized current

Author

Slavin, A.N. ; Kabos, P.

Author_Institution

Dept. of Phys., Oakland Univ., Rochester, MI, USA

fYear

2005

fDate

4-8 April 2005

Firstpage

5

Lastpage

6

Abstract

A simple analytic theory based on the assumption that a large angle quasiuniform precession of magnetization is excited in-a "free" ferromagnetic layer traversed by spin-polarized current at different external bias magnetic field orientations is demonstrated. The theory is based on the classical Hamiltonian formalism for spin waves in magnetic films and gives good qualitative and even partly quantitative explanation of the majority of experimental facts observed in literature.

Keywords

ferromagnetism; magnetic thin films; magnetisation; microwave generation; nanocontacts; spin Hamiltonians; spin polarised transport; spin waves; classical Hamiltonian formalism; external bias magnetic field orientation; ferromagnetic layer; large angle quasiuniform magnetization precession; magnetic films; magnetic nanocontact; microwave generation; spin waves; spin-polarized current; Character generation; Electromagnetics; Electrons; Frequency; Magnetic fields; Magnetic films; Microwave generation; Microwave theory and techniques; Physics; Saturation magnetization;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463431

Filename

1463431