Penetration of a magnetic wall into thin ferromagnetic electrodes of a nano-contact spin valve

2013/02/06 by Munetaka Sasaki, Sasaki, Munetaka, Susumu Tanaka +9
Physics and Astronomy · #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #cond-mat.mes-hall

paper · pdf · doi:10.48550/arxiv.1302.1248

4 pages, 4 figures

arxiv created 2013/02/06 · arxiv updated 2013/02/07

Abstract

We theoretically analyzed a magnetic wall confined in a nano-contact spin valve paying special attention to the penetration of the magnetic wall into thin ferromagnetic electrodes. We showed that, compared with the Bloch wall, the penetration of the Neel wall is suppressed by increases of the demagnetization energy. We found the optimal conditions of the radius and height of the nano-contact to maximize the power of the current-induced oscillation of the magnetic wall. We also found that the thermal stability of the Bloch wall increases when the nano-contact's radius increases or height decreases.

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