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Title: Large amplitude oscillation of magnetization in spin-torque oscillator stabilized by field-like torque

Abstract

Oscillation frequency of spin torque oscillator with a perpendicularly magnetized free layer and an in-plane magnetized pinned layer is theoretically investigated by taking into account the field-like torque. It is shown that the field-like torque plays an important role in finding the balance between the energy supplied by the spin torque and the dissipation due to the damping, which results in a steady precession. The validity of the developed theory is confirmed by performing numerical simulations based on the Landau-Lifshitz-Gilbert equation.

Authors:
; ;  [1];  [2]
  1. National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba 305-8568 (Japan)
  2. Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 Ave. A. Fresnel, Palaiseau (France)
Publication Date:
OSTI Identifier:
22410012
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; DAMPING; DIFFERENTIAL EQUATIONS; LAYERS; MAGNETIC FIELDS; MAGNETIZATION; OSCILLATIONS; OSCILLATORS; PRECESSION; SPIN; TORQUE

Citation Formats

Taniguchi, Tomohiro, E-mail: tomohiro-taniguchi@aist.go.jp, Kubota, Hitoshi, Imamura, Hiroshi, and Tsunegi, Sumito. Large amplitude oscillation of magnetization in spin-torque oscillator stabilized by field-like torque. United States: N. p., 2015. Web. doi:10.1063/1.4907696.
Taniguchi, Tomohiro, E-mail: tomohiro-taniguchi@aist.go.jp, Kubota, Hitoshi, Imamura, Hiroshi, & Tsunegi, Sumito. Large amplitude oscillation of magnetization in spin-torque oscillator stabilized by field-like torque. United States. doi:10.1063/1.4907696.
Taniguchi, Tomohiro, E-mail: tomohiro-taniguchi@aist.go.jp, Kubota, Hitoshi, Imamura, Hiroshi, and Tsunegi, Sumito. Thu . "Large amplitude oscillation of magnetization in spin-torque oscillator stabilized by field-like torque". United States. doi:10.1063/1.4907696.
@article{osti_22410012,
title = {Large amplitude oscillation of magnetization in spin-torque oscillator stabilized by field-like torque},
author = {Taniguchi, Tomohiro, E-mail: tomohiro-taniguchi@aist.go.jp and Kubota, Hitoshi and Imamura, Hiroshi and Tsunegi, Sumito},
abstractNote = {Oscillation frequency of spin torque oscillator with a perpendicularly magnetized free layer and an in-plane magnetized pinned layer is theoretically investigated by taking into account the field-like torque. It is shown that the field-like torque plays an important role in finding the balance between the energy supplied by the spin torque and the dissipation due to the damping, which results in a steady precession. The validity of the developed theory is confirmed by performing numerical simulations based on the Landau-Lifshitz-Gilbert equation.},
doi = {10.1063/1.4907696},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}