CUED Publications database

Optical characterization of nonlocal spin transfer torque acting on a single nanomagnet

Keatley, PS and Aziz, A and Ali, M and Hickey, BJ and Blamire, MG and Hicken, RJ (2014) Optical characterization of nonlocal spin transfer torque acting on a single nanomagnet. Physical Review B - Condensed Matter and Materials Physics, 89. ISSN 1098-0121

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Abstract

Time-resolved scanning Kerr microscopy (TRSKM) has been used to examine the effect of nonlocal spin transfer torque (NL-STT) within a two-terminal current perpendicular-to-plane nonlocal spin valve. A combination of Oersted field and NL-STT was used to excite and control the magnetization dynamics. By comparison with a macrospin model, the strength of the NL-STT was quantified and found to be comparable to that achieved by direct injection of spin-polarized current. The sensitivity of the magneto-optical probe to small out-of-plane deflections of the magnetization also allows the NL-STT to be quantified in quasi-dc measurements, greatly simplifying the investigation of STT phenomena. © 2014 American Physical Society.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:06
Last Modified: 01 Aug 2017 03:03
DOI: