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Title: Micromagnetic study of spin transfer switching with a spin polarization tilted out of the free layer plane

Abstract

We present the results of zero temperature macrospin and micromagnetic simulations of spin transfer switching of thin film nanomagnets in the shape of an ellipse with a spin-polarization tilted out of the layer plane. The perpendicular component of the spin-polarization is shown to increase the reversal speed, leading to a lower current for switching in a given time. However, for tilt angles larger than a critical angle, the layer magnetization starts to precess about an out-of-plane axis, which leads to a final magnetization state that is very sensitive to simulation conditions. As the ellipse lateral size increases, this out-of-plane precession is suppressed, due to the excitation of spatially non-uniform magnetization modes.

Authors:
; ; ;  [1]
  1. Department of Physics, New York University, New York, New York 10003 (United States)
Publication Date:
OSTI Identifier:
22410092
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:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRIC CURRENTS; EXCITATION; MAGNETIC MATERIALS; MAGNETIZATION; MAGNETS; NANOSTRUCTURES; PRECESSION; SPIN; SPIN ORIENTATION; TEMPERATURE ZERO K; THIN FILMS; VELOCITY

Citation Formats

Chaves-O'Flynn, Gabriel D., E-mail: gdc229@nyu.edu, Wolf, Georg, Pinna, Daniele, and Kent, Andrew D. Micromagnetic study of spin transfer switching with a spin polarization tilted out of the free layer plane. United States: N. p., 2015. Web. doi:10.1063/1.4907241.
Chaves-O'Flynn, Gabriel D., E-mail: gdc229@nyu.edu, Wolf, Georg, Pinna, Daniele, & Kent, Andrew D. Micromagnetic study of spin transfer switching with a spin polarization tilted out of the free layer plane. United States. doi:10.1063/1.4907241.
Chaves-O'Flynn, Gabriel D., E-mail: gdc229@nyu.edu, Wolf, Georg, Pinna, Daniele, and Kent, Andrew D. Thu . "Micromagnetic study of spin transfer switching with a spin polarization tilted out of the free layer plane". United States. doi:10.1063/1.4907241.
@article{osti_22410092,
title = {Micromagnetic study of spin transfer switching with a spin polarization tilted out of the free layer plane},
author = {Chaves-O'Flynn, Gabriel D., E-mail: gdc229@nyu.edu and Wolf, Georg and Pinna, Daniele and Kent, Andrew D.},
abstractNote = {We present the results of zero temperature macrospin and micromagnetic simulations of spin transfer switching of thin film nanomagnets in the shape of an ellipse with a spin-polarization tilted out of the layer plane. The perpendicular component of the spin-polarization is shown to increase the reversal speed, leading to a lower current for switching in a given time. However, for tilt angles larger than a critical angle, the layer magnetization starts to precess about an out-of-plane axis, which leads to a final magnetization state that is very sensitive to simulation conditions. As the ellipse lateral size increases, this out-of-plane precession is suppressed, due to the excitation of spatially non-uniform magnetization modes.},
doi = {10.1063/1.4907241},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}