Electrically controlled crossed Andreev reflection in two-dimensional antiferromagnets

Abstract

We report tunable crossed Andreev reflection (CAR) in a superconductor sandwiched between two antiferromagnetic layers. We consider recent examples of two-dimensional magnets with hexagonal lattices, where gate voltages control the carrier type and density, and predict a robust signature of perfect CAR in the nonlocal differential conductance with one electron-doped and one hole-doped antiferromagnetic lead. The magnetic field-free and spin-degenerate CAR signal is electrically controlled and visible over a large voltage range, showing promise for solid-state quantum entanglement applications.

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Cited by in corpus (9)

• Theory of Tunneling Spectroscopy in Unconventional $p$-wave Magnet-Superconductor Hybrid Structures
• Crossed Andreev reflection in altermagnets
• Crossed Andreev reflection in collinear $p$-wave magnet/triplet superconductor junctions
• Perfect crossed Andreev reflection in the proximitized graphene/superconductor/proximitized graphene junctions
• Quasiclassical theory for antiferromagnetic metals
• Crossed Andreev reflection in topological insulator nanowire T-junctions
• Interface probe for antiferromagnets using geometric curvature
• Magnon dispersion and spin transport in CrCl${}_3$ bilayers under different strain-induced magnetic states
• Long-range Cooper pair splitting by chiral Majorana edge states