تقرير
Planckian Metal at a Doping-Induced Quantum Critical Point
| العنوان: | Planckian Metal at a Doping-Induced Quantum Critical Point |
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| المؤلفون: | Dumitrescu, Philipp T., Wentzell, Nils, Georges, Antoine, Parcollet, Olivier |
| المصدر: | Phys. Rev. B 105, L180404 (2022) |
| سنة النشر: | 2021 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We numerically study a model of interacting spin-$1/2$ electrons with random exchange coupling on a fully connected lattice. This model hosts a quantum critical point separating two distinct metallic phases as a function of doping: a Fermi liquid phase with a large Fermi surface volume and a low-doping phase with local moments ordering into a spin-glass. We show that this quantum critical point has non-Fermi liquid properties characterized by $T$-linear Planckian behavior, $\omega/T$ scaling and slow spin dynamics of the Sachdev-Ye-Kitaev (SYK) type. The $\omega/T$ scaling function associated with the electronic self-energy is found to have an intrinsic particle-hole asymmetry, a hallmark of a `skewed' non-Fermi liquid. Comment: 6+11 pages; 4+10 figures; v2. improves data analysis, expands appendix, increases convergence of data, updates all figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.105.L180404 |
| URL الوصول: | http://arxiv.org/abs/2103.08607 |
| رقم الأكسشن: | edsarx.2103.08607 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.105.L180404 |
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