Visualizing rotation and reversal of the Neel vector through antiferromagnetic trichroism.

ABSTRACT: Conventional magnetic memories rely on bistable magnetic states, such as the up and down magnetization states in ferromagnets. Increasing the number of stable magnetic states in each cell, preferably composed of antiferromagnets without stray fields, promises to achieve higher-capacity memories. Thus far, such multi-stable antiferromagnetic states have been extensively studied in conducting systems. Here, we report on a striking optical response in the magnetoelectric collinear antiferromagnet Bi₂CuO₄, which is an insulating version of the representative spintronic material, CuMnAs, with four stable Néel vector orientations. We find that, due to a magnetoelectric effect in a visible range, which is enhanced by a peculiar local environment of Cu ions, absorption coeffi

SUBMITTER: Kimura K 

PROVIDER: S-EPMC8816959 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature