High-Order Anisotropic Magnetoresistance in a Cubic Ferromagnet

Physical Review Letters 2026

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Authors: Haoran Chen, Yue Chen, Yizi Feng, Ruda Guo, Yuanfei Fan, Hongyue Xu, Tong Wu, Zhongxun Guo, Di Yue, Xiaofeng Jin, Yi Liu, Zhe Yuan
+1 more Yizheng Wu
DOI: 10.1103/n518-jlf6
Cited by: 1
References: 59

Abstract

High-order anisotropic magnetoresistance (AMR) is observed up to the 18th harmonic in cubic Fe(001) thin films, overturning the long-standing paradigm that only two-fold and four-fold terms are symmetry-allowed. Using angle-resolved transport and Fourier analysis, we show that six-fold and higher-order terms are intrinsic, tunable by temperature and thickness, and predicted by crystal symmetry. Microscopically, the two-fold sign reversal arises from a crossover between weak and strong scattering regimes, while high-order terms emerge from the interplay of anisotropic Fermi velocity and relaxation time. Our results establish high-order AMR as a symmetry-prescribed property of cubic ferromagnets, providing critical benchmarks for spin-orbit transport theory and enabling new angular-sensitive spintronic functionalities.

Fields of Study & Subjects

Magnetic properties of thin films Multiferroics and related materials Magnetic and transport properties of perovskites and related materials

Publication details

Journal / source
Physical Review Letters
Publisher
American Physical Society (APS)
Volume
136
Issue
8
Pages
086704–086704
Publication date
30 January 2026
Language
EN