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Updated: Apr 20, 2026

Scanning-probe Single-electron Capacitance Spectroscopy
Published on: July 30, 2013
Capacitance effect on the oscillation and switching characteristics of spin torque oscillators
Tui Zeng1, Yan Zhou2, Chi Wah Leung3
1Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong.
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.
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