Electrically Controlled Crossed Andreev Reflection in Two-Dimensional Antiferromagnets

被引：30

作者：

Jakobsen, Martin F. ^{[1
]}

Brataas, Arne ^{[1
]}

Qaiumzadeh, Alireza ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Ctr Quantum Spintron, Dept Phys, NO-7491 Trondheim, Norway

来源：

PHYSICAL REVIEW LETTERS | 2021年 / 127卷 / 01期

关键词：

All Open Access; Green;

D O I：

10.1103/PhysRevLett.127.017701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report generic and 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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页数：7

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