Accurate analysis for harmonic Hall voltage measurement for spin-orbit torques

Seok Jin Yun, Eun Sang Park, Kyung Jin Lee, Sang Ho Lim

Research output: Contribution to journalArticlepeer-review

Abstract

An accurate method is developed to extract the spin-orbit effective fields through analysis of the results of harmonic Hall voltage measurements by deriving detailed analytical equations, in which both the z-component of the applied magnetic field and the second-order perpendicular magnetic anisotropy are taken into account. The method is tested by analyzing the results of a macrospin simulation. The spin-orbit effective fields extracted from the analysis are found to be in excellent agreement with the input spin-orbit effective fields used for the macrospin simulation over the entire range of the polar magnetization angle and a wide range (0-2) of the ratio of the planar to the anomalous Hall voltage considered in this study. The accuracy of the proposed method is demonstrated more clearly via a systematic study involving a comparison of its results with those of the conventional analytical method.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2017 Dec 3

Keywords

  • Analytical method
  • Harmonic Hall voltage measurement
  • Macrospin simulation
  • Spin-orbit torque

ASJC Scopus subject areas

  • General

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