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공과대학
전자전기공학전공
Journal papers
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Physics-based SPICE model of spin-torque oscillators
Title
Physics-based SPICE model of spin-torque oscillators
Authors
Lim H.
;
Ahn S.
;
Lee S.
;
Shin H.
Ewha Authors
신형순
;
이승준
SCOPUS Author ID
신형순
; 이승준
Issue Date
2012
Journal Title
Japanese Journal of Applied Physics
ISSN
0021-4922
Citation
Japanese Journal of Applied Physics vol. 51, no. 4 PART 2
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
The spin-torque oscillator (STO) is a new compact device operating as a tunable RF oscillator in the tens of gigahertz range whose characteristics are determined by the applied current and magnetic field. In this paper, we present a physics-based empirical circuit-level model of an STO that is compatible with circuit-level simulators such as SPICE. The characteristics of an STO are modeled as physics-based analytic functions of the applied current and external magnetic field. The validity of our model was verified by the HSPICE simulation of a current mirror circuit that contains an STO element. The simulation results are in good agreement with the experimental data in the normal operation range. High-order nonlinear effects at large currents are not included in our model because there is no theoretical equation available yet that can precisely explain these effects. © 2012 The Japan Society of Applied Physics.
DOI
10.1143/JJAP.51.04DM03
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