Hybrid spintronics and straintronics: A magnetic technology for ultra low energy computing and signal processing

Authors

Kuntal Roy, Virginia Commonwealth UniversityFollow
Supriyo Bandyopadhyay, Virginia Commonwealth UniversityFollow
Jayasimha Atulasimha, Virginia Commonwealth UniversityFollow

Document Type

Article

Original Publication Date

2011

Journal/Book/Conference Title

Applied Physics Letter

Volume

99

Issue

6

DOI of Original Publication

10.1063/1.3624900

Comments

Originally published at http://dx.doi.org/10.1063/1.3624900

Date of Submission

April 2015

Abstract

The authors show that the magnetization of a 2-phase magnetostrictive/piezoelectric multiferroic single-domain shape-anisotropic nanomagnet can be switched with very small voltages that generate strain in the magnetostrictive layer. This can be the basis of ultralow power computing and signal processing. With appropriate material choice, the energy dissipated per switching event can be reduced to ∼45 kT at room temperature for a switching delay of ∼100 ns and ∼70 kT for a switching delay of ∼10 ns, if the energy barrier separating the two stable magnetization directions is ∼32 kT. Such devices can be powered by harvesting energy exclusively from the environment without the need for a battery.

Rights

Roy, K., Bandyopadhyay, S., Atulasimha, J. Hybrid spintronics and straintronics: A magnetic technology for ultra low energy computing and signal processing. Applied Physics Letters, 99, 063108 (2011). Copyright © 2011 AIP Publishing LLC.

Is Part Of

VCU Electrical and Computer Engineering Publications