Interface superconductivity in LaAlO3−SrTiO3 heterostructures
S. N. Klimin, J. Tempere, J. T. Devreese, D. van der Marel
DOI 10.1103/PhysRevB.89.184514 · 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
The interface superconductivity in LaAlO3−SrTiO3 heterostructures reveals a nonmonotonic behavior of the critical temperature as a function of the two-dimensional density of charge carriers. We develop a theoretical description of interface superconductivity in strongly polar heterostructures, based on the dielectric function formalism. The density dependence of the critical temperature is calculated, accounting for all phonon branches including different types of optical (interface and half-space) and acoustic phonons. The longitudinal-optic- and acoustic-phonon mediated electron-electron interaction is shown to be the dominating mechanism governing the superconducting phase transition in the heterostructure.
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. | — | Pressure not reported | unknown |
Similar papers
Multiband superconductivity due to the electron - LO-phonon interaction in strontium titanate and on a SrTiO3/LaAlO3 interface
similarity 0.92S. N. Klimin et al. · 2016 · arXiv:1606.00644
Source status unknown — claims are unverified
Gate-tuned superfluid density at the superconducting LaAlO3/SrTiO3 interface
similarity 0.92Julie A. Bert et al.
Source status unknown — claims are unverified
Interface and bulk superconductivity in superconducting heterostructures with enhanced critical temperatures
similarity 0.91Giacomo Mazza et al.
Source status unknown — claims are unverified
Superconductivity in the two-dimensional electron gas induced by high-energy optical phonon mode and large polarization of the SrTiO3 substrate
similarity 0.91Baruch Rosenstein et al.
Source status unknown — claims are unverified
Direct imaging of the coexistence of ferromagnetism and superconductivity at the LaAlO3/SrTiO3 interface
similarity 0.90J. A. Bert et al. · 2011 · arXiv:1108.3150
Source status unknown — claims are unverified
Effect of disorder on superconductivity and Rashba spin-orbit coupling in LaAlO3 /SrTiO3 interfaces
similarity 0.90G. Singh et al.
Source status unknown — claims are unverified