Capacitance effect on the oscillation and switching characteristics of spin torque oscillators

Tui Zeng, Yan Zhou, Chi Wah Leung, Peter P.T. Lai, Philip W.T. Pong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

We have studied the capacitance effect on the oscillation characteristics and the switching characteristics of the spin torque oscillators (STOs). We found that when the external field is applied, the STO oscillation frequency exhibits various dependences on the capacitance for injected current ranging from 8 to 20 mA. The switching characteristic is featured with the emerging of the canted region; the canted region increases with the capacitance. When the external field is absent, the STO free-layer switching time exhibits different dependences on the capacitance for different injected current. These results help to establish the foundation for capacitance-involved STO modeling.
Original languageEnglish
JournalNanoscale Research Letters
Volume9
Issue number1
DOIs
Publication statusPublished - 1 Jan 2014

Keywords

  • Canted region
  • Capacitance effect
  • Oscillation frequency
  • Switching time

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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