Flat-band superconductivity in strained Dirac materials
V. J. Kauppila, F. Aikebaier, T. T. Heikkilä
DOI 10.1103/PhysRevB.93.214505 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We consider superconducting properties of a two-dimensional Dirac material such as graphene under strain that produces a flat-band spectrum in the normal state. We show that in the superconducting state, such a model results in a highly increased critical temperature compared to the case without the strain, inhomogeneous order parameter with two-peak shaped local density of states and yet a large and almost uniform and isotropic supercurrent. This model could be realized in strained graphene or ultracold atom systems and could be responsible for unusually strong superconductivity observed in some graphite interfaces and certain IV-VI semiconductor heterostructures.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| PbTe/SnTe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PbSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PbS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PbTe/PbSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PbS/YbS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| PbTe/YbS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Demonstrating lattice symmetry protection in topological crystalline superconductors
similarity 0.92Xiong-Jun Liu et al.
Source status unknown — claims are unverified
Direct evidence for interfacial superconductivity in two-layer semiconducting heterostructures
similarity 0.92N. Ya. Fogel et al.
Source status unknown — claims are unverified
Flat band superconductivity in strained Dirac materials
similarity 0.91V. J. Kauppila et al. · 2016 · arXiv:1601.04505
Source status unknown — claims are unverified
Superconductor-insulator transition in two-dimensional dirty boson systems
similarity 0.90Mats Wallin et al.
Source status unknown — claims are unverified
Superconducting States in Pseudo-Landau-Levels of Strained Graphene
similarity 0.90Bruno Uchoa & Yafis Barlas
Source status unknown — claims are unverified
Strain-induced time-reversal odd superconductivity in graphene
similarity 0.90Bitan Roy & Vladimir Juričić
Source status unknown — claims are unverified