تقرير
Ubiquity of Linear Resistivity at Intermediate Temperature in Bad Metals
| العنوان: | Ubiquity of Linear Resistivity at Intermediate Temperature in Bad Metals |
|---|---|
| المؤلفون: | Boyd, G. R., Zlatic', V., Freericks, J. K. |
| المصدر: | Phys. Rev. B 91, 075118 (2015) |
| سنة النشر: | 2014 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Bad metals display transport behavior that differs from what is commonly seen in ordinary metals. One of the most significant differences is a resistivity that is linear in temperature and rises to well above the Ioffe-Regel limit (where the mean-free path is equal to the lattice spacing). Using an exact Kubo formula, we show that a linear resistivity naturally occurs for many systems when they are in an incoherent intermediate-temperature state. We verify the analytic arguments with numerical calculations for a simplified version of the Hubbard model which is solved with dynamical mean-field theory. Similar features have also been seen in Hubbard models, where they can begin at even lower temperatures due to the formation of resilient quasiparticles. Comment: (5 pages, 3 figures) |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.91.075118 |
| URL الوصول: | http://arxiv.org/abs/1404.2859 |
| رقم الأكسشن: | edsarx.1404.2859 |
| قاعدة البيانات: | arXiv |
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