We study the superconducting state of the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface using Josephson junctions as spectroscopic probes. The transport properties of these devices reveal the presence of two superconducting gap structures and of an unconventional superconducting π channel. These features provide evidence of an unconventional superconducting ground state, possibly related to the interplay between superconductivity and the large Rashba spin-orbit coupling in the 2DEG.

Signatures of unconventional superconductivity in the LaAlO3/SrTiO3 two-dimensional system / Stornaiuolo, Daniela; Massarotti, Davide; DI CAPUA, Roberto; Lucignano, Procolo; Pepe, GIOVANNI PIERO; Salluzzo, Marco; Tafuri, Francesco. - In: PHYSICAL REVIEW. B. - ISSN 2469-9969. - 95:14(2017), pp. 140502-1-140502-5. [10.1103/PhysRevB.95.140502]

Signatures of unconventional superconductivity in the LaAlO3/SrTiO3 two-dimensional system

STORNAIUOLO, DANIELA;MASSAROTTI, DAVIDE;DI CAPUA, ROBERTO;LUCIGNANO, PROCOLO;PEPE, GIOVANNI PIERO;SALLUZZO, MARCO;Tafuri, Francesco
2017

Abstract

We study the superconducting state of the two-dimensional electron gas (2DEG) at the LaAlO3/SrTiO3 interface using Josephson junctions as spectroscopic probes. The transport properties of these devices reveal the presence of two superconducting gap structures and of an unconventional superconducting π channel. These features provide evidence of an unconventional superconducting ground state, possibly related to the interplay between superconductivity and the large Rashba spin-orbit coupling in the 2DEG.
2017
Signatures of unconventional superconductivity in the LaAlO3/SrTiO3 two-dimensional system / Stornaiuolo, Daniela; Massarotti, Davide; DI CAPUA, Roberto; Lucignano, Procolo; Pepe, GIOVANNI PIERO; Salluzzo, Marco; Tafuri, Francesco. - In: PHYSICAL REVIEW. B. - ISSN 2469-9969. - 95:14(2017), pp. 140502-1-140502-5. [10.1103/PhysRevB.95.140502]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/674262
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