Tunneling Anisotropic Magnetoresistance of Helimagnet Tunnel Junctions
Chenglong Jia, Jamal Berakdar
TL;DR
This paper theoretically explores the tunneling anisotropic magnetoresistance (TAMR) effect in helimagnet tunnel junctions, highlighting the influence of spiral magnetic order and electric field control via magnetoelectric coupling.
Contribution
It introduces a theoretical model demonstrating TAMR in helimagnet tunnel junctions influenced by magnetic order and electric field control, which is a novel insight.
Findings
TAMR effect arises from spiral magnetic order and spin-orbit coupling.
Electric field can efficiently control the TAMR effect.
The study provides a theoretical basis for electric-field tunable spintronic devices.
Abstract
We theoretically investigate the angular and spin dependent transport in normal-metal/helical-multiferroic/ferromagnetic heterojunctions. We find a tunneling anisotropic magnetoresistance (TAMR) effect due to the spiral magnetic order in the tunnel junction and to an effective spin-orbit coupling induced by the topology of the localized magnetic moments in the multiferroic spacer. The predicted TAMR effect is efficiently controllable by an external electric field due to the magnetoelectric coupling.
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