| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Second Harmonic Detection of Spin-Dependent Transport in Magnetic Nanostructures |
| YU Hai-Ming1,2, S. Granville1, YU Da-Peng2, J-Ph. Ansermet1 |
| 1Ecole Polytechnique Fédérale de Lausanne, IPMC,Station 3, CH-1015 Lausanne-EPFL, Switzerland2State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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YU Hai-Ming, S. Granville, YU Da-Peng et al 2010 Chin. Phys. Lett. 27 027201 |
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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.
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| Keywords:
72.20.My
73.50.Lw
73.61.-r
75.70.-i
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Received: 10 December 2009
Published: 08 February 2010
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| PACS: |
72.20.My
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(Galvanomagnetic and other magnetotransport effects)
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73.50.Lw
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(Thermoelectric effects)
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73.61.-r
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(Electrical properties of specific thin films)
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75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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