Planar graphene-NbSe Josephson junctions in a parallel magnetic field
arXiv:2106.11662 · doi:10.1103/PhysRevB.103.115401
Abstract
Thin transition metal dichalcogenides sustain superconductivity at large in-plane magnetic fields due to Ising spin-orbit protection, which locks their spins in an out-of-plane orientation. Here we use thin NbSe as superconducting electrodes laterally coupled to graphene, making a planar, all van der Waals two-dimensional Josephson junction (2DJJ). We map out the behavior of these novel devices with respect to temperature, gate voltage, and both out-of-plane and in-plane magnetic fields. Notably, the 2DJJs sustain supercurrent up to as high as 8.5 T, where the Zeeman energy rivals the Thouless energy , a regime hitherto inaccessible in graphene. As the parallel magnetic field increases, the 2DJJ's critical current is suppressed and in a few cases undergoes suppression and recovery. We explore the behavior in by considering theoretically two effects: a 0- transition induced by tuning of the Zeeman energy and the unique effect of ripples in an atomically thin layer which create a small spatially varying perpendicular component of the field. The 2DJJs have potential utility as flexible probes for two-dimensional superconductivity in a variety of materials and introduce high as a newly accessible experimental knob.
References in corpus (42)
- Proximity effects in superconductor-ferromagnet heterostructures
- Atomic Structure of Graphene on SiO2
- STM Spectroscopy of ultra-flat graphene on hexagonal boron nitride
- Evidence of Ising pairing in superconducting NbSe atomic layers
- Bipolar supercurrent in graphene
- Intrinsic and extrinsic corrugation of monolayer graphene deposited on SiO2
- The Josephson critical current in a long mesoscopic S-N-S junction
- Quantum oscillations of the critical current and high-field superconducting proximity in ballistic graphene
- Critical Current Oscillations in Strong Ferromagnetic Pi-Junctions
- Oscillations of the superconducting critical current in Nb-Cu-Ni-Cu-Nb junctions
- Specular Interband Andreev Reflections in Graphene
- 0-pi Josephson tunnel junctions with ferromagnetic barrier
- Spin-Orbit induced phase-shift in BiSe Josephson junctions
- High-fidelity conformation of graphene to SiO2 topographic features
- Spatially resolved edge currents and guided-wave electronic states in graphene
- Unusual suppression of the superconducting energy gap and critical temperature in atomically thin NbSe2
- Spectroscopy of bulk and few-layer superconducting NbSe with van der Waals tunnel junctions
- Superconducting proximity effect through graphene from zero field to the Quantum Hall regime
- Observation of Periodic pi-Phase Shifts in Ferromagnet-Superconductor Multilayers
- Edge currents shunt the insulating bulk in gapped graphene
- Density of states and supercurrent in diffusive SNS junctions: role of nonideal interfaces and spin-flip scattering
- A supercurrent switch in graphene -junctions
- Observation of Supercurrent in PbIn-Graphene-PbIn Josephson Junction
- Anomalous Fraunhofer Interference in Epitaxial Superconductor-Semiconductor Josephson Junctions
- Static and dynamic properties of 0, pi, and 0-pi ferromagnetic tunnel Josephson Junctions
- Detection of the phase shift from a single quantized superconducting vortex
- Ballistic superconductivity and tunable -junctions in InSb quantum wells
- Finite momentum Cooper pairing in 3D topological insulator Josephson junctions
- On the origin of critical temperature enhancement in atomically-thin superconductors
- Magnetic interference patterns in 0-Pi SIFS Josephson junctions: effects of asymmetry between 0 and Pi regions
- Effects of spin-orbit coupling and spatial symmetries on the Josephson current in SNS junctions
- Field dependence of the vortex core size in a multi-band superconductor
- Inter-Landau-level Andreev Reflection at the Dirac Point in a Graphene Quantum Hall State Coupled to a NbSe2 Superconductor
- Long range Josephson coupling through ferromagnetic graphene
- Full range of proximity effect probed with Superconductor/Graphene/Superconductor junctions
- Josephson junctions in a local inhomogeneous magnetic field
- Zeeman tunability of Andreev bound states in van-der-Waals tunnel barriers
- Critical current scaling in long diffusive graphene-based Josephson junctions
- Zeeman effect induced 0- transitions in ballistic Dirac semimetal Josephson junctions
- Triplet proximity effect and odd-frequency pairing in graphene
- Spin-orbit-enhanced robustness of supercurrent in graphene/WS Josephson junctions
- Combined Zeeman and orbital effect on the Josephson effect in rippled graphene
Cited by in corpus (16)
- Nanomaterials for Quantum Information Science and Engineering
- Ferromagnetic Materials for Josephson π Junctions
- Quantized conductance with non-zero shot noise as a signature of Andreev edge state
- Anomalous Josephson effect in planar noncentrosymmetric superconducting devices
- Magnetic field filtering of the hinge supercurrent in unconventional metal NiTe-based Josephson junctions
- High magnetic field stability in a planar graphene-NbSe SQUID
- Topological superconductivity in a magnetic-texture coupled Josephson junction
- Gate-tunable nonlocal Josephson effect through magnetic van der Waals bilayers
- Gate tunable enhancement of supercurrent in hybrid planar Josephson junctions
- Flux pinning in superconducting multilayer 2H-NbSe nano-step junction
- Chiral adiabatic transmission protected by Fermi surface topology
- Building 3D superconductor-based Josephson junctions using a via transfer approach
- Diamond-shaped evolution of the superconducting interference pattern in NbTiN weak-link Josephson junctions
- Coupling of Klein-Andreev Resonant States in BiSrCaCuO-graphene-BiSrCaCuO Devices
- Anisotropic supercurrent suppression and revivals in a graphene-based Josephson junction under in-plane magnetic fields
- Josephson junctions of topological nodal superconductors