تقرير
Effects of interaction strength, doping, and frustration on the antiferromagnetic phase of the two-dimensional Hubbard model
| العنوان: | Effects of interaction strength, doping, and frustration on the antiferromagnetic phase of the two-dimensional Hubbard model |
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| المؤلفون: | Fratino, L., Charlebois, M., Sémon, P., Sordi, G., Tremblay, A. -M. S. |
| المصدر: | Phys. Rev. B 96, 241109 (2017) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Quantum Gases |
| الوصف: | Recent quantum-gas microscopy of ultracold atoms and scanning tunneling microscopy of the cuprates reveal new detailed information about doped Mott antiferromagnets, which can be compared with calculations. Using cellular dynamical mean-field theory, we map out the antiferromagnetic (AF) phase of the two-dimensional Hubbard model as a function of interaction strength $U$, hole doping $\delta$ and temperature $T$. The N\'eel phase boundary is non-monotonic as a function of $U$ and $\delta$. Frustration induced by second-neighbor hopping reduces N\'eel order more effectively at small $U$. The doped AF is stabilized at large $U$ by kinetic energy and at small $U$ by potential energy. The transition between the AF insulator and the doped metallic AF is continuous. At large $U$, we find in-gap states similar to those observed in scanning tunneling microscopy. We predict that, contrary to the Hubbard bands, these states are only slightly spin polarized. Comment: 6 pages, 3 figures and supplemental information |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.96.241109 |
| URL الوصول: | http://arxiv.org/abs/1709.09655 |
| رقم الأكسشن: | edsarx.1709.09655 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.96.241109 |
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