TY  - JOUR
AU  - Chen, Gong
AU  - Robertson, MacCallum
AU  - Hoffmann, Markus
AU  - Ophus, Colin
AU  - Fernandes Cauduro, André L.
AU  - Lo Conte, Roberto
AU  - Ding, Haifeng
AU  - Wiesendanger, Roland
AU  - Blügel, Stefan
AU  - Schmid, Andreas K.
AU  - Liu, Kai
TI  - Observation of Hydrogen-Induced Dzyaloshinskii-Moriya Interaction and Reversible Switching of Magnetic Chirality
JO  - Physical review / X
VL  - 11
IS  - 2
SN  - 2160-3308
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2021-01796
SP  - 021015
PY  - 2021
AB  - The Dzyaloshinskii-Moriya interaction (DMI) has drawn much attention, as it stabilizes magnetic chirality, with important implications in fundamental and applied research. This antisymmetric exchange interaction is induced by the broken inversion symmetry at interfaces or in noncentrosymmetric lattices. Significant interfacial DMIs are often found at magnetic/heavy-metal interfaces with large spin-orbit coupling. Recent studies have shown promise for induced DMI at interfaces involving light elements such as carbon (graphene) or oxygen. Here, we report direct observation of induced DMI by chemisorption of the lightest element, hydrogen, on a ferromagnetic layer at room temperature, which is supported by density functional theory calculations. We further demonstrate a reversible chirality transition of the magnetic domain walls due to the induced DMI via hydrogen chemisorption and desorption. These results shed new light on the understanding of DMI in low atomic number materials and the design of novel chiral spintronics and magneto-ionic devices.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000648487200001
DO  - DOI:10.1103/PhysRevX.11.021015
UR  - https://juser.fz-juelich.de/record/891883
ER  -