Publication
Title
Interface superconductivity in $LaAlO_{3}-SrTiO_{3}$ heterostructures
Author
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.
Language
English
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Publication
Lancaster, Pa : 2014
ISSN
1098-0121 [print]
1550-235X [online]
Volume/pages
89:18(2014), 7 p.
Article Reference
184514
ISI
000338039000010
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
 Faculty/Department Research group Project info Dynamic effects in coupled superconductor-ferromagnet nanosystems.Quantum simulation of polaronic effects in quantum gases.Nonlinear Transport of the Wigner Solid on a Superfluid 4He in a Quasi-One- Dimensional Channel. Publication type Subject Affiliation Publications with a UAntwerp address