تقرير
Pairing instability near a lattice-influenced nematic quantum critical point
| العنوان: | Pairing instability near a lattice-influenced nematic quantum critical point |
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| المؤلفون: | Labat, D., Paul, I. |
| المصدر: | Phys. Rev. B 96, 195146 (2017) |
| سنة النشر: | 2017 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We study how superconducting Tc is affected as an electronic system in a tetragonal environment is tuned to a nematic quantum critical point (QCP). Including coupling of the electronic nematic variable to the relevant lattice strain restricts criticality only to certain high symmetry directions. This allows a weak-coupling treatment, even at the QCP. We develop a criterion distinguishing weak and strong Tc enhancements upon approaching the QCP. We show that negligible Tc enhancement occurs only if pairing is dominated by a non-nematic interaction away from the QCP, and simultaneously if the electron-strain coupling is sufficiently strong. We argue this is the case of the iron superconductors. Comment: 7 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.96.195146 |
| URL الوصول: | http://arxiv.org/abs/1703.04146 |
| رقم الأكسشن: | edsarx.1703.04146 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.96.195146 |
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