Large diversity of magnetic phases in two-dimensional magnets with spin-orbit coupling and superconductivity
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866912001775632384 |
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| author | Neuhaus-Steinmetz, Jannis Matthies, Tim Vedmedenko, Elena Y. Posske, Thore Wiesendanger, Roland |
| author_facet | Neuhaus-Steinmetz, Jannis Matthies, Tim Vedmedenko, Elena Y. Posske, Thore Wiesendanger, Roland |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_08551 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large diversity of magnetic phases in two-dimensional magnets with spin-orbit coupling and superconductivity Neuhaus-Steinmetz, Jannis Matthies, Tim Vedmedenko, Elena Y. Posske, Thore Wiesendanger, Roland Superconductivity 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. |
| title | Large diversity of magnetic phases in two-dimensional magnets with spin-orbit coupling and superconductivity |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2405.08551 |