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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
  • , C. W. Leung
  • , A. Ruotolo

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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. © 2011 American Institute of Physics.
Original languageEnglish
Article number242506
JournalApplied Physics Letters
Volume98
Issue number24
DOIs
Publication statusPublished - 13 Jun 2011

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