摘要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.
Abstract：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.
(Magnetic properties of thin films, surfaces, and interfaces)
引用本文:
YU Hai-Ming;S. Granville;YU Da-Peng;J-Ph. Ansermet. Second Harmonic Detection of Spin-Dependent Transport in Magnetic Nanostructures[J]. 中国物理快报, 2010, 27(2): 27201-027201.
YU Hai-Ming, S. Granville, YU Da-Peng, J-Ph. Ansermet. Second Harmonic Detection of Spin-Dependent Transport in Magnetic Nanostructures. Chin. Phys. Lett., 2010, 27(2): 27201-027201.
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