تقرير
Noncoplanar and chiral spin states on the way towards N\'eel ordering in fullerene Heisenberg models
| العنوان: | Noncoplanar and chiral spin states on the way towards N\'eel ordering in fullerene Heisenberg models |
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| المؤلفون: | Szabó, Attila, Capponi, Sylvain, Alet, Fabien |
| المصدر: | Phys. Rev. B 109, 054410 (2024) |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Physics - Computational Physics |
| الوصف: | Using high-accuracy variational Monte Carlo based on group-convolutional neural networks (GCNNs), we obtain the symmetry-resolved low-energy spectrum of the spin-1/2 Heisenberg model on several highly symmetric fullerene geometries, including the famous C$_{60}$ buckminsterfullerene. We argue that as the degree of frustration is lowered in large fullerenes, they display characteristic features of incipient magnetic ordering: correlation functions show high-intensity Bragg peaks consistent with N\'eel-like ordering, while the low-energy spectrum is organised into a tower of states. Competition with frustration, however, turns the simple N\'eel order into a noncoplanar one. Remarkably, we find and predict chiral incipient ordering in a large number of fullerene structures. Comment: 14+3 pages, 14 figures, 3+4 tables. v2: close to published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.109.054410 |
| URL الوصول: | http://arxiv.org/abs/2311.01496 |
| رقم الأكسشن: | edsarx.2311.01496 |
| قاعدة البيانات: | arXiv |
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