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
Rok vydání:	2023
Předmět:	Condensed Matter - Materials Science
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
Externí odkaz:	http://arxiv.org/abs/2307.09764 Zobrazit plný text záznamu View this record from Arxiv