2024 - Sustainable Industrial Processing Summit
SIPS 2024 Volume 12. Schultz Intl. Symp / Science of Intelligent & Sustainable Materials / Ferromagnetic & Superconducting Magnets
| Editors: | F. Kongoli, J-M. Dubois, M. Calin, S. Kobe |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2024 |
| Pages: | 236 pages |
| ISBN: | 978-1-998384-26-6 (CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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QUANTUM-COMPUTING SEARCH FOR SKYRMIONIC ORDERING IN HEISENBERG FERROMAGNETS
Matej Komelj1;1JOZEF STEFAN INSTITUTE, Ljubljana, Slovenia;
Type of Paper: Invited
Id Paper: 126
Topic: 42
Abstract:
Magnetic skyrmions are topologically-protected vortex-like magnetization patterns that can exist under special conditions in noncentrosymmetric structures. They might be applicable as carriers of classical and quantum information [1]. Whereas at the macroscopic level their existence is a finite-temperature phenomenon, theory predicts skyrmions with nanometer length scales at T = 0 [2].
An appropriate model, which can exhibit the respective phase, is a two-dimensional spin-1/2 Heisenberg lattice with the Dzyaloshiskii-Moriya interaction in an external field. A promising way to find the ground and excited states of the corresponding Hamiltonian is to apply a quantum algorithm. In this manner we have mapped the model-parameters phase diagram by performing the calculations with the variational quantum eigensolver (VQE) [3]. Although, due to a limited number of the working qubits, the investigated lattices have been too small to host a full skyrmion, the results clearly indicate the relation between the parameters, required for their existence.