تقرير
Critical conductance of a one-dimensional doped Mott insulator
| العنوان: | Critical conductance of a one-dimensional doped Mott insulator |
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| المؤلفون: | Garst, M., Novikov, D. S., Stern, Ady, Glazman, L. I. |
| المصدر: | Phys. Rev. B 77, 035128 (2008) |
| سنة النشر: | 2007 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We consider the two-terminal conductance of a one-dimensional Mott insulator undergoing the commensurate-incommensurate quantum phase transition to a conducting state. We treat the leads as Luttinger liquids. At a specific value of compressibility of the leads, corresponding to the Luther-Emery point, the conductance can be described in terms of the free propagation of non-interacting fermions with charge e/\sqrt{2}. At that point, the temperature dependence of the conductance across the quantum phase transition is described by a Fermi function. The deviation from the Luther-Emery point in the leads changes the temperature dependence qualitatively. In the metallic state, the low-temperature conductance is determined by the properties of the leads, and is described by the conventional Luttinger liquid theory. In the insulating state, conductance occurs via activation of e/\sqrt{2} charges, and is independent of the Luttinger liquid compressibility. Comment: 13 pages, 3 figures. Published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.77.035128 |
| URL الوصول: | http://arxiv.org/abs/0708.0545 |
| رقم الأكسشن: | edsarx.0708.0545 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.77.035128 |
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