Planar approximation for the frequencies of spin transfer oscillators

TL;DR

This paper introduces a planar approximation method to efficiently and accurately calculate the frequency of spin transfer oscillators with a strongly easy plane anisotropy, simplifying analysis of their magnetization dynamics.

Contribution

The paper presents a novel planar approximation approach specifically for spin transfer oscillators with easy plane anisotropy, improving computational efficiency and accuracy.

Findings

Planar approximation accurately predicts oscillator frequencies.

Method reduces computational complexity.

Applicable to a broad class of spin transfer oscillators.

Abstract

A large class of spin transfer oscillators use the free layer with a strong easy plane anisotropy, which forces its magnetization to move close to the plane. We show that in this situation the effective planar approximation provides a fast and accurate way of calculating the oscillator frequency.