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Energy dissipation and switching delay in stress-induced switching of multiferroic nanomagnets in the presence of thermal fluctuations.

Authors :
Roy, Kuntal
Bandyopadhyay, Supriyo
Atulasimha, Jayasimha
Source :
Journal of Applied Physics; 7/15/2012, Vol. 112 Issue 2, p023914-023914-8, 1p
Publication Year :
2012

Abstract

Switching the magnetization of a shape-anisotropic 2-phase multiferroic nanomagnet with voltage-generated stress is known to dissipate very little energy (<1 aJ for a switching time of ∼0.5 ns) at 0 K temperature. Here, we show by solving the stochastic Landau-Lifshitz-Gilbert equation that switching can be carried out with ∼100% probability in less than 1 ns while dissipating less than 1.5 aJ at room temperature. This makes nanomagnetic logic and memory systems, predicated on stress-induced magnetic reversal, one of the most energy-efficient computing hardware extant. We also study the dependence of energy dissipation, switching delay, and the critical stress needed to switch, on the rate at which stress on the nanomagnet is ramped up or down. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00218979
Volume :
112
Issue :
2
Database :
Complementary Index
Journal :
Journal of Applied Physics
Publication Type :
Academic Journal
Accession number :
78219849
Full Text :
https://doi.org/10.1063/1.4737792