Second Harmonic Detection of Spin-Dependent Transport in Magnetic Nanostructures

Detection of the second harmonic response of magnetic nanostructures to an ac current is shown to be a very sensitive probe of the magnetization reversal process. A temperature oscillation is obtained by Joule heating instead of using a laser as the heat source, as in thermo-galvanic voltage measurements (TGV). Joule heating is used to produce a large local temperature gradient in asymmetric Co/Cu/Co spin valves. Evidence is found for an effect of a heat current on magnetization.


Published in:
Chinese Physics Letters, 27, 2, 027201
Year:
2010
ISSN:
1741-3540
Laboratories:




 Record created 2010-04-01, last modified 2018-03-17


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