Macrospin modeling of sub-ns pulse switching of perpendicularly magnetized free layer via spin-orbit torques for cryogenic memory applications

Title
Macrospin modeling of sub-ns pulse switching of perpendicularly magnetized free layer via spin-orbit torques for cryogenic memory applications
Authors
이억재Junbo ParkG. E. RowlandsD. C. RalphR. A. Buhrman
Issue Date
2014-09
Publisher
Applied physics letters
Citation
VOL 105, NO 10-102404-5
Abstract
We model, using the macrospin approximation, the magnetic reversal of a perpendicularly magnetized nanostructured free layer formed on a normal, heavy-metal nanostrip, subjected to spin-orbit torques (SOTs) generated by short (<= 0.5 ns) current pulses applied to the nanostrip, to examine the potential for SOT-based fast, efficient cryogenic memory. Due to thermal fluctuations, if solely an anti-damping torque is applied, then, for a device with sufficiently low anisotropy (H-anis(0)similar to 1 kOe) suitable for application in cryogenic memory, a high magnetic damping parameter (alpha similar to 0.1 - 0.2) is required for reliable switching over a significant variation of pulse current. The additional presence of a substantial field-like torque improves switching reliability even for low damping (alpha <= 0.03).
URI
http://pubs.kist.re.kr/handle/201004/65303
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE