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Atomic-scale Dzyaloshinskii-Moriya-modified Yoshimori spirals in Fe double layer on Ir(110)

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arxiv 2411.12642 v1 pith:KVJDWDOA submitted 2024-11-19 cond-mat.mtrl-sci cond-mat.mes-hall

Atomic-scale Dzyaloshinskii-Moriya-modified Yoshimori spirals in Fe double layer on Ir(110)

Timo Knispel , Vasily Tseplyaev , Gustav Bihlmayer , Stefan Bl\"ugel , Thomas Michely , Jeison Fischer This is my paper
classification cond-mat.mtrl-sci cond-mat.mes-hall
keywords magneticspinspiralsubstratesyoshimorialonganalysisatomic-scale
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Ultrathin magnetic films on heavy metal substrates with strong spin-orbit coupling provide versatile platforms for exploring novel spin textures. So far, structurally open fcc(110) substrates remain largely terra incognita. Here, we stabilize a metastable, unreconstructed Ir(110)-$(1 \times 1)$ surface supporting two layers of Fe. Combining spin-polarized scanning tunneling microscopy and ab initio calculations, we reveal a right-handed N\'eel-type spin spiral along the [$\overline{1}10$] crystallographic direction with a period of 1.27~nm as the magnetic ground state. Our analysis reveals this spiral is of the Yoshimori type, i.e., driven by frustrated Heisenberg interactions, with the Dzyaloshinskii-Moriya interaction determining its cycloidal nature and handedness.

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