Journal
PHYSICAL REVIEW B
Volume 102, Issue 24, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.102.241107
Keywords
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Funding
- Vannevar Bush Faculty Fellowship (VBFF) from the Department of Defense
- Office of Naval Research [N00014-17-1-2818]
- DARPA [HR0011727183-D18AP00010]
- National Natural Science Foundation of China [NSFC 11704007]
- China Scholarship Council (CSC) [201808615126]
- Arkansas High Performance Computing Center
- National Science Foundation
- Arkansas Economic Development Commission
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Utilization of van der Waals magnetic materials as the host of topologically protected skyrmionic and other complex spin textures has been drawing increasing attention. Here, using first-principles-based calculations, we predict a new stable magnetic CrGe(Se,Te)(3) Janus monolayer with a strong Dzyaloshinskii-Moriya interaction (DMI), due to the breaking of inversion symmetry. Consequently, nanometric skyrmions (that carry a topological charge of +/- 1) and skyrmionium states (with a zero topological charge) can spontaneously form in the absence of magnetic field. We further unveil a subtle competition between DMI and frustration as key for stabilizing skyrmioniums.
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