Large diversity of magnetic phases in two-dimensional magnets with spin-orbit coupling and superconductivity
Abstract
We classify the magnetic ground states of a 2D lattice of localized magnetic moments which are coupled to a superconducting substrate with Rashba-spin-orbit coupling. We discover a rich magnetic phase diagram with surprisingly complex structures including 2q-spin-spirals, a 2x2-periodic pattern, and skyrmion lattices, self-consistently, using an effective classical spin Hamiltonian and show that the system hosts non-zero 4-spin interactions. Our in-depth analysis of about ten thousand magnetic configurations becomes feasible using contrastive clustering, a recent advanced unsupervised machine learning technique. This work proposes simple few-band systems for non-collinear magnetic states and stimulates further research on topological effects in their self-consistent electronic structure.
Cite
@article{arxiv.2405.08551,
title = {Large diversity of magnetic phases in two-dimensional magnets with spin-orbit coupling and superconductivity},
author = {Jannis Neuhaus-Steinmetz and Tim Matthies and Elena Y. Vedmedenko and Thore Posske and Roland Wiesendanger},
journal= {arXiv preprint arXiv:2405.08551},
year = {2024}
}