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 publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)


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 languageEnglish
Article number242506
JournalApplied Physics Letters
Issue number24
Publication statusPublished - 13 Jun 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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