Superconducting dome in LaAlO3/SrTiO3 interfaces as a direct consequence of the extended s-wave symmetry of the gap
M. Zegrodnik, P. Wójcik
DOI 10.1103/PhysRevB.102.085420 · Physical Review B
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Abstract
The two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface exhibits gate-tunable superconductivity with a domelike shape of TC as a function of electron concentration. Here, we propose that the experimentally observed behavior can be explained as a direct effect of the dominant extended s−wave symmetry of the superconducting gap. Our results agree very well with the experimental data. As shown, neither the correlation effects nor the spin-orbit coupling significantly influence the physical picture of the paired state stemming from our analysis.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaAlO3/SrTiO3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.35 | Pressure not reported | unknown |
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