تقرير
Finite-temperature conductance of strongly interacting quantum wire with a nuclear spin order
| العنوان: | Finite-temperature conductance of strongly interacting quantum wire with a nuclear spin order |
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| المؤلفون: | Aseev, Pavel, Klinovaja, Jelena, Loss, Daniel |
| المصدر: | Phys. Rev. B 95, 125440 (2017) |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We study the temperature dependence of the electrical conductance of a clean strongly interacting quantum wire in the presence of a helical nuclear spin order. The nuclear spin helix opens a temperature-dependent partial gap in the electron spectrum. Using a bosonization framework we describe the gapped electron modes by sine-Gordon-like kinks. We predict an internal resistivity caused by an Ohmic-like friction these kinks experience via interacting with gapless excitations. As a result, the conductance rises from $G=e^2/h$ at temperatures below the critical temperature when nuclear spins are fully polarized to $G=2e^2/h$ at higher temperatures when the order is destroyed, featuring a relatively wide plateau in the intermediate regime. The theoretical results are compared with the experimental data for GaAs quantum wires obtained recently by Scheller et al. [Phys. Rev. Lett. 112, 066801 (2014)]. Comment: 18 pages, 10 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.95.125440 |
| URL الوصول: | http://arxiv.org/abs/1611.10238 |
| رقم الأكسشن: | edsarx.1611.10238 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.95.125440 |
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