Detecting Fulde-Ferrell superconductors by an Andreev interferometer

Abstract

We propose an Andreev interferometer, based on a branched Y-junction, to detect the finite momentum pairing in Fulde-Ferrell (FF) superconductors. In this interferometer, the oscillation of subgap conductance is a unique function of phase difference between the two channels of the Y-junction, which is determined by the phase modulation of the order parameter in the FF superconductors. This interferometer has the potential not only to determine the magnitude but also the direction of the momentum of Cooper pairs in the FF superconductor. The possible applications of the interferometer in the identification of the finite momentum pairing in non-centrosymmetric superconductors are also discussed.

14pages,4 figures

References in corpus (8)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Tunable Supercurrent Through Semiconductor Nanowires
• Calorimetric Evidence for a Fulde-Ferrell-Larkin-Ovchinnikov Superconducting State in the Layered Organic Superconductor κ$-(BEDT-TTF)$_2$Cu(NCS)$_2$
• Theory of 2D superconductor with broken inversion symmetry
• Andreev Reflection in Heavy-Fermion Superconductors and Order Parameter Symmetry in CeCoIn_5
• Tunneling anisotropic magnetoresistance in multilayer-(Co/Pt)/AlOx/Pt structures
• Anomalous Upper Critical Field in CeCoIn_5/YbCoIn_5 Superlattices with a Rashba-type Heavy Fermion Interface
• Colossal enhancement of upper critical fields in noncentrosymmetric heavy fermion superconductors near quantum criticality: CeRhSi${}_3$ and CeIrSi${}_3$

Cited by in corpus (5)

• Long-range Cooper pair splitter with high entanglement production rate
• Probing valley filtering effect by Andreev reflection in zigzag graphene nanoribbon
• Fulde-Ferrell States in Inverse Proximity Coupled Magnetically-Doped Topological Heterostructures
• Andreev-Bragg reflection from an Amperian superconductor
• Majorana Fermions in Semiconducting Nanowires on the Top of Fulde-Ferrell Superconductor