Electrical control of crossed Andreev reflection and spin-valley switch in antiferromagnet/superconductor junctions
arXiv:2509.04003 · doi:10.1103/PhysRevB.104.045418
Abstract
We study the subgap transport through the antiferromagnet/superconductor (AF/S) and antiferromagnet/superconductor/antiferromagnet (AF/S/AF) junctions controlled by electric field in a generic buckled honeycomb system, such as silicene, germanene, and stanene. In the present of electric field and antiferromagnetic exchange field, the spin-valley polarized half metallic phase can be achieved in the honeycomb system due to the spin-orbit coupling, which affords an opportunity to generate the pure crossed Andreev reflection (CAR). It is found that the pure CAR can be generated without local Andreev reflection (AR) and elastic cotunneling (EC) over a wide range of electric field. A spin-valley switch effect can be realized between the pure CAR and the pure EC by adjusting the electric field. The properties of AR process and CAR process strongly depend on the spin-valley polarized states. Our results suggest that the device can implement an electrical measurement of the CAR process and spin-valley switch.
arXiv comment9 pages, 8 figures
References in corpus (48)
- The electronic properties of graphene
- Quantum entanglement
- Antiferromagnetic spintronics
- Valley contrasting physics in graphene: magnetic moment and topological transport
- Valley filter and valley valve in graphene
- Electronic States of Graphene Nanoribbons
- Low-energy effective Hamiltonian involving spin-orbit coupling in Silicene and Two-Dimensional Germanium and Tin
- Andreev reflection and Klein tunneling in graphene
- Bipolar supercurrent in graphene
- Valley-Polarized Metals and Quantum Anomalous Hall Effect in Silicene
- Specular Andreev reflection in graphene
- Manipulation of Majorana fermion, Andreev reflection and Josephson current on topological insulators
- Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
- Splitting of a Cooper pair by a pair of Majorana bound states
- Gated Silicene as a tunable source of nearly 100% spin-polarized electrons
- Valley-Polarized Quantum Anomalous-Hall Effects in Silicene
- Carbon Nanotubes as Cooper Pair Beam Splitters
- Evidence for crossed Andreev reflection in superconductor-ferromagnet hybrid structures
- Spin-Valleytronics in Silicene: Quantum-Spin-Quantum-Anomalous Hall Insulators and Single-Valley Semimetals
- Electronic Entanglement in the Vicinity of a Superconductor
- Josephson Current and Multiple Andreev Reflections in Graphene SNS Junctions
- Experimental observation of bias-dependent non-local Andreev reflection
- Controllable valley and spin transports in ferromagnetic silicene junctions
- Detection of valley polarization in graphene by a superconducting contact
- Crossed Andreev reflection in a graphene bipolar transistor
- Cooper Pair Splitting by means of Graphene Quantum Dots
- Quantum transport through a graphene nanoribbon-superconductor junction
- Superconducting Proximity Effect in Silicene: Spin-Valley Polarized Andreev Reflection, Non-Local Transport, and Supercurrent
- Controllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid system
- Topological Phase Transition without Gap Closing
- 0-pi transitions in Josephson junctions with antiferromagnetic interlayers
- Nonlocal Cooper pair Splitting in a pSn Junction
- Manipulation and Characterization of the Valley Polarized Topological Kink States in Graphene Based Interferometers
- Detecting entangled states in graphene via crossed Andreev reflection
- Proposal for an all-electrical measurement of crossed Andreev reflection in topological insulators
- Microscopic theory of Cooper pair beam splitters based on carbon nanotubes
- Crossed Andreev effects in two-dimensional quantum Hall systems
- Spin-dependent quasiparticle reflection and bound states at interfaces with itinerant antiferromagnets
- Valley- and spin-switch effects in molybdenum disulfide superconducting spin valve
- Electrical and Thermal Transport in Antiferromagnet-Superconductor Junctions
- Nonlocal transistor based on pure crossed Andreev reflection in a EuO-graphene/superconductor hybrid structure
- Spin-filtered and Spatially Distinguishable Crossed Andreev Reflection in a Silicene-Superconductor Junction
- Selective focusing of electrons and holes in a graphene-based superconducting lens
- Enhancement of crossed Andreev reflection in normal-superconductor-normal junction of thin topological insulator
- Enhanced Specular Andreev reflection in bilayer graphene
- Enhanced Andreev reflection in gapped graphene
- Electrically tunable chiral Majorana edge modes in quantum anomalous Hall insulator-topological superconductor systems
- Quantum charge pumping through resonant crossed Andreev reflection in superconducting hybrid junction of Silicene