Hopfions in chiral magnetic trilayers
The stabilization of hopfions in chiral magnetic trilayers requires three essential conditions: (1) the middle layer must possess sufficiently strong Dzyaloshinskii-Moriya interaction (DMI) relative to collinear interactions to establish skyrmions as the ground state in a 2D film, yet not so strong as to fragment the spin texture; (2) the layer thickness must provide adequate space for skyrmion tubes to twist and form closed-loop configurations; and (3) two capping layers with strong magnetic anisotropy are necessary to confine the hopfion and prevent its expansion. These combined criteria ensure the formation and stability of hopfion structures in the trilayer system.
Authors
- X. S. Wang (ORCID: https://orcid.org/0000-0003-1374-4407)
- C. Wang (ORCID: https://orcid.org/0000-0002-1740-578X)
- X. R. Wang (ORCID: https://orcid.org/0000-0002-8600-3258)
- X. C. Hu (ORCID: https://orcid.org/0000-0002-4029-8310)
Institutions
- Tianjin University (CN)
- Hunan University (CN)
- Hong Kong University of Science and Technology (HK)
- Chinese University of Hong Kong, Shenzhen (CN)
Publication Details
- Journal
- Physical review. B./Physical review. B
- Published
- 2025-03-27
- DOI
- https://doi.org/10.1103/physrevb.111.094436
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Chinese University of Hong Kong
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities