Combined effect of magnetic field and charge current on antiferromagnetic domain-wall dynamics

0484709 - FZÚ 2018 RIV US eng J - Journal Article
Yamane, Y. - Gomonay, O. - Velkov, H. - Sinova, Jairo
Combined effect of magnetic field and charge current on antiferromagnetic domain-wall dynamics.
Physical Review B. Roč. 96, č. 6 (2017), s. 1-5, č. článku 064408. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA ČR GB14-37427G
EU Projects: European Commission(XE) 610115 - SC2
Institutional support: RVO:68378271
Keywords : spintronics
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.813, year: 2017

We theoretically examine a cross effect of magnetic field and charge current on antiferromagnetic domain wall dynamics. Since antiferromagnetic materials are largely insensitive to external magnetic fields in general, charge current has been shown recently as an alternative and efficient way to manipulate antiferromagnets. We find a new role of the magnetic field in the antiferromagnetic dynamics that appears when it is combined with charge current, demonstrating a domain wall motion in the presence of both field and current. We show that a spatially varying magnetic field can shift the current-driven domain-wall velocity, depending on the domain-wall structure and the direction of the field gradient. Our result suggests a novel concept of field control of current-driven antiferromagnetic dynamics.

Permanent Link: http://hdl.handle.net/11104/0279843