Magnetic field filtering of the hinge supercurrent in unconventional metal NiTe${}_2$-based Josephson junctions

Abstract

Topological materials with boundary (surface/edge/hinge) states have attracted tremendous research interest. Besides, unconventional (obstructed atomic) materials have recently drawn lots of attention owing to their obstructed boundary states. Experimentally, Josephson junctions (JJs) constructed on materials with boundary states produce the peculiar boundary supercurrent, which was utilized as a powerful diagnostic approach. Here, we report the observations of conspicuous hinge supercurrent in NiTe${}_2$-based JJs. Particularly, applying an in-plane magnetic field along the Josephson current could rapidly suppress the bulk supercurrent and retain the nearly pure hinge supercurrent, namely the magnetic field filtering of supercurrent. Further systematic comparative analysis and theoretical calculations demonstrate the existence of unconventional nature and obstructed hinge states in NiTe${}_2$. Our results revealed the unique hinge states in unconventional metal NiTe${}_2$, and demonstrated in-plane magnetic field as an efficient method to filter out the futile bulk contributions and thereby to highlight the hinge states hidden in topological/unconventional materials.

arXiv comment20+6 pages,6+5 figures

References in corpus (45)

• Topological Insulators
• Weyl and Dirac Semimetals in Three Dimensional Solids
• Quantized Electric Multipole Insulators
• Topological quantum chemistry
• Colloquium: Topological Band Theory
• Electric Multipole Moments, Topological Multipole Moment Pumping, and Chiral Hinge States in Crystalline Insulators
• Evidence of Ising pairing in superconducting NbSe${}_2$ atomic layers
• The (High Quality) Topological Materials In The World
• $(d-2)$-dimensional edge states of rotation symmetry protected topological states
• Reflection symmetric second-order topological insulators and superconductors
• Two Dimensional Ising Superconductivity in Gated MoS${}_2$
• Higher-Order Topology in Bismuth
• Superconductivity protected by spin-valley locking in ion-gated MoS2
• Classical higher-order topological insulators
• Realization of the field-free Josephson Diode
• A Josephson junction supercurrent diode
• Induced Superconductivity in the Quantum Spin Hall Edge
• Edge-mode Superconductivity in a Two Dimensional Topological Insulator
• Effective Demagnetization Factors of Diamagnetic Samples of Various Shapes
• Higher Order Topological Phases: A General Principle of Construction
• Strong and Fragile Topological Dirac Semimetals with Higher-Order Fermi Arcs
• Majorana Kramers pairs in higher-order topological insulators
• Observation of a Majorana zero mode in a topologically protected edge channel
• Strong Superconducting Proximity Effect in Pb-Bi2Te3 Hybrid Structures
• Spatially resolved edge currents and guided-wave electronic states in graphene
• Evidence of Higher Order Topology in Multilayer WTe${}_2$ from Josephson Coupling through Anisotropic Hinge States
• $4\pi$ periodic Andreev bound states in a Dirac semimetal
• Lattice symmetry assisted second order topological superconductors and Majorana patterns
• Observation of an edge supercurrent in the Weyl superconductor MoTe${}_2$
• Low-energy type-II Dirac fermions and spin-polarized topological surface states in transition-metal dichalcogenide NiTe${}_2$
• Edge currents shunt the insulating bulk in gapped graphene
• One-Dimensional Edge Transport in Few-Layer WTe${}_2$
• Density of states and supercurrent in diffusive SNS junctions: role of nonideal interfaces and spin-flip scattering
• Anomalous Fraunhofer Interference in Epitaxial Superconductor-Semiconductor Josephson Junctions
• Unconventional Materials: the mismatch between electronic charge centers and atomic positions
• Finite momentum Cooper pairing in 3D topological insulator Josephson junctions
• Reducing electronic transport dimension to topological hinge states by increasing geometry size of Dirac semimetal Josephson junctions
• Edge superconductivity in Multilayer WTe2 Josephson junction
• Planar graphene-NbSe${}_2$ Josephson junctions in a parallel magnetic field
• Bulk Fermi surfaces of the Dirac type-II semimetallic candidate NiTe2
• Magnitude and Spatial Distribution Control of the Supercurrent in Bi2O2Se-Based Josephson Junction
• Large shift current, $\pi$ Zak phase and unconventional nature in Se and Te
• Interface superconductivity in a type-II Dirac semimetal NiTe${}_2$
• High magnetic field stability in a planar graphene-NbSe${}_2$ SQUID
• The destiny of obstructed atomic insulator under correlation

Cited by in corpus (5)

• Majorana corner modes in unconventional monolayers of the 1T-PtSe2 family
• Thermomodulated intrinsic Josephson effect in Kagome CsV3Sb5
• Molecular Beam Epitaxy Growth and Doping Modulation of Topological Semimetal NiTe${}_2$
• Unveiling Topological Hinge States in the Higher-Order Topological Insulator WTe${}_2$ Based on the Fractional Josephson Effect
• Fractional ac Josephson effect as evidence of topological hinge states in a Dirac semimetal NiTe2