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Optical characterization of nonlocal spin transfer torque acting on a single nanomagnet.
- Source :
-
Physical Review B: Condensed Matter & Materials Physics . Mar2014, Vol. 89 Issue 9, p094421-1-094421-7. 7p. - Publication Year :
- 2014
-
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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10980121
- Volume :
- 89
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Physical Review B: Condensed Matter & Materials Physics
- Publication Type :
- Academic Journal
- Accession number :
- 95862743
- Full Text :
- https://doi.org/10.1103/PhysRevB.89.094421