Multiple-mode excitation in spin-transfer nanocontacts with dynamic polarizer

N. Wang; X. L. Wang; W. Qin; S. H. Yeung; D. T.K. Kwok; H. F. Wong; Q. Xue; P. K. Chu; Chi Wah Leung; A. Ruotolo

doi:10.1063/1.3600328

Multiple-mode excitation in spin-transfer nanocontacts with dynamic polarizer

N. Wang, X. L. Wang, W. Qin, S. H. Yeung, D. T.K. Kwok, H. F. Wong, Q. Xue, P. K. Chu, Chi Wah Leung, A. Ruotolo

Research output: Journal article publication › Journal article › Academic research › peer-review

7 Citations (Scopus)

Abstract

We report our study on the emission response of a magnetic nanocontact with dynamic polarizer in perpendicular magnetic field. In this configuration three modes are accessible, two of which correspond to the precessional motion of a vortex in one of the two ferromagnetic layers with the other working as a static polarizer. At high currents a third mode can be observed that is ascribed to the simultaneous precession of two vortices, one in each layer, with the other layer working as a dynamic polarizer.

Original language	English
Article number	242506
Journal	Applied Physics Letters
Volume	98
Issue number	24
DOIs	https://doi.org/10.1063/1.3600328
Publication status	Published - 13 Jun 2011

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3600328

http://hdl.handle.net/10397/4421

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AU - Qin, W.

AU - Yeung, S. H.

AU - Kwok, D. T.K.

AU - Wong, H. F.

AU - Xue, Q.

AU - Chu, P. K.

AU - Leung, Chi Wah

AU - Ruotolo, A.

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N2 - We report our study on the emission response of a magnetic nanocontact with dynamic polarizer in perpendicular magnetic field. In this configuration three modes are accessible, two of which correspond to the precessional motion of a vortex in one of the two ferromagnetic layers with the other working as a static polarizer. At high currents a third mode can be observed that is ascribed to the simultaneous precession of two vortices, one in each layer, with the other layer working as a dynamic polarizer.

AB - We report our study on the emission response of a magnetic nanocontact with dynamic polarizer in perpendicular magnetic field. In this configuration three modes are accessible, two of which correspond to the precessional motion of a vortex in one of the two ferromagnetic layers with the other working as a static polarizer. At high currents a third mode can be observed that is ascribed to the simultaneous precession of two vortices, one in each layer, with the other layer working as a dynamic polarizer.

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Multiple-mode excitation in spin-transfer nanocontacts with dynamic polarizer

Abstract

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