Document Type
Article
Original Publication Date
2012
Journal/Book/Conference Title
Applied Physics Letters
Volume
101
Issue
16
DOI of Original Publication
10.1063/1.4761250
Date of Submission
March 2015
Abstract
We predict the existence of a metastable magnetization state in a single-domain nanomagnet with uniaxial shape anisotropy. It emerges when a spin-polarized current, which delivers a spin-transfer-torque possessing a field-like component, is injected into the nanomagnet. At a metastable state, the internal torque due to nanomagnet's shape anisotropy cancels the externally applied spin-transfer-torque and hence the nettorque acting on the magnetization becomes zero. Therefore, it prevents spin-transfer-torque from switching the magnetization from one stable state along the easy axis to the other, even in the presence of room-temperature thermal fluctuations.
Rights
Roy, K., Bandyopadhyay, S., and Atulasimha, J. Metastable state in a shape-anisotropic single-domain nanomagnet subjected to spin-transfer-torque. Applied Physics Letters, 101, 162405 (2012). Copyright © 2012 AIP Publishing LLC.
Is Part Of
VCU Electrical and Computer Engineering Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.4761250