Rights statement: ©2014 American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Optical characterization of non-local spin transfer torque acting on a single nanomagnet.
AU - Keatley, P.
AU - Aziz, Atif
AU - Ali, M.
AU - Kickey, B. J.
AU - Blamire, M. G.
AU - Kicken, R. J.
N1 - ©2014 American Physical Society
PY - 2014/3/21
Y1 - 2014/3/21
N2 - 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 becomparable 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.
AB - 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 becomparable 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.
U2 - 10.1103/PhysRevB.89.094421
DO - 10.1103/PhysRevB.89.094421
M3 - Journal article
VL - 89
JO - Physical review B
JF - Physical review B
SN - 1098-0121
IS - 9
M1 - 094421
ER -