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)-(1×1) 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 [110] 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.
@article{arxiv.2411.12642,
title = {Atomic-scale Dzyaloshinskii-Moriya-modified Yoshimori spirals in Fe double layer on Ir(110)},
author = {Timo Knispel and Vasily Tseplyaev and Gustav Bihlmayer and Stefan Blügel and Thomas Michely and Jeison Fischer},
journal= {arXiv preprint arXiv:2411.12642},
year = {2025}
}