Berry curvature-induced transport signature for altermagnetic order.

ABSTRACT: Altermagnetism has been detected in several materials using spin-sensitive probes. These measurements require rather complex setups that make it challenging to track variations in altermagnetic order, e.g., to identify a temperature-tuned altermagnetic phase transition. We propose a simple transport measurement that can probe the order parameter for d-wave altermagnetism. We suggest magnetoconductivity anisotropy-the difference between the two principal values of the magnetoconductivity tensor. This quantity can be easily measured as a function of temperature, without any spin-selective apparatus. It acquires a nonzero value in a C ₄ K phase, where C ₄ rotations and time reversal K are not symmetries but their combination is. This ef

SUBMITTER: Farajollahpour T 

PROVIDER: S-EPMC12270910 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature