Domain Walls in a Row-Wise Antiferromagnetic Mn Monolayer
| Autor: | Spethmann, Jonas, Grünebohm, Martin, Wiesendanger, Roland, von Bergmann, Kirsten, Kubetzka, André |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Nat. Commun. 12, 3488 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41467-021-23760-2 |
| Popis: | We investigate magnetic domain walls in a single fcc Mn layer on Re(0001) employing spin-polarized STM, atom manipulation, and spin dynamics simulations. The low symmetry of the row-wise antiferromagnetic (1Q) state leads to a new type of domain wall which connects rotational 1Q domains by a transient 2Q state with characteristic 90$^\circ$ angles between neighboring magnetic moments. The domain wall properties depend on their orientation and their width of about 2 nm essentially results from a balance of Heisenberg and higher-order exchange interactions. Atom manipulation allows domain wall imaging with atomic spin-resolution, as well as domain wall positioning, and we demonstrate that the force to move an atom is anisotropic on the 1Q domain. Comment: 6 pages, 4 figures |
| Databáze: | arXiv |
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