Giant Spin-flop magnetoresistance in a collinear antiferromagnetic tunnel junction.

ABSTRACT: Collinear antiferromagnetic (AFM) materials have the unique promise of no stray fields, displaying ultrafast dynamics, and being robust against perturbation fields which motivate the extensive research of antiferromagnetic spintronics. However, the detection of antiferromagnetic order poses formidable challenges. Here, we report the electrical detection of colinear antiferromagnetism in all-epitaxial RuO₂/MgO/RuO₂ tunnel junctions (TJ) using spin-flop tunneling anisotropic magnetoresistance (TAMR). We measured a TAMR ratio of around 60% at room temperature, which arises from the switching between the parallel and perpendicular configurations of the adjacent collinear AFM state. Furthermore, we carried out angular-dependent measurements using this antiferromagnetic tun

SUBMITTER: Xu S 

PROVIDER: S-EPMC12460592 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature