Coupling of the triple-Q state to the atomic lattice by anisotropic symmetric exchange
Autor: | Nickel, Felix, Kubetzka, André, Haldar, Soumyajyoti, Wiesendanger, Roland, Heinze, Stefan, von Bergmann, Kirsten |
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Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Phys. Rev. B 108, L180411 (2023) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevB.108.L180411 |
Popis: | We identify the triple-Q (3Q) state as magnetic ground state in Pd/Mn and Rh/Mn bilayers on Re(0001) using spin-polarized scanning tunneling microscopy and density functional theory. An atomistic model reveals that in general the 3Q state with tetrahedral magnetic order and zero net spin moment is coupled to a hexagonal atomic lattice in a highly symmetric orientation via the anisotropic symmetric exchange interaction, whereas other spin-orbit coupling terms cancel due to symmetry. Our experiments are in agreement with the predicted orientation of the 3Q state. A distortion from the ideal tetrahedral angles leads to other orientations of the 3Q state which, however, results in a reduced topological orbital magnetization compared to the ideal 3Q state. Comment: 15 pages, 4 figures |
Databáze: | arXiv |
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