Anomalous modulation of a zero bias peak in a hybrid nanowire-superconductor device

Abstract

We report on sub-gap transport measurements of an InAs nanowire coupled to niobium nitride leads at high magnetic fields. We observe a zero-bias anomaly (ZBA) in the differential conductance of the nanowire for certain ranges of magnetic field and chemical potential. The ZBA can oscillate in width with either magnetic field or chemical potential; it can even split and reform. We discuss how our results relate to recent predictions of hybridizing Majorana fermions in semiconducting nanowires, while considering more mundane explanations.

7 pages, 7 figures

References in corpus (19)

• Non-Abelian Anyons and Topological Quantum Computation
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
• Non-Abelian quantum order in spin-orbit-coupled semiconductors: The search for topological Majorana particles in solid state systems
• Tunable Supercurrent Through Semiconductor Nanowires
• Quantum supercurrent transistors in carbon nanotubes
• Transport spectroscopy of NS nanowire junctions with Majorana fermions
• Towards a realistic transport modeling in a superconducting nanowire with Majorana fermions
• Zero-bias anomaly in a nanowire quantum dot coupled to superconductors
• A Majorana smoking gun for the superconductor-semiconductor hybrid topological system
• Search for Majorana fermions in multiband semiconducting nanowires
• Splitting of Majorana modes due to intervortex tunneling in a p + ip superconductor
• Even-odd effect in Andreev Transport through a Carbon Nanotube Quantum Dot
• Tunneling of anyonic Majorana excitations in topological superconductors
• Kondo Universal Scaling for a Quantum Dot Coupled to Superconducting Leads
• Multi-mode Fabry-Pérot conductance oscillations in suspended stacking-faults-free InAs nanowires

Cited by in corpus (86)

• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Colloquium: Majorana Fermions in nuclear, particle and solid-state physics
• Hard gap in epitaxial semiconductor-superconductor nanowires
• Kitaev chains with long-range pairing
• Ballistic superconductivity in semiconductor nanowires
• SNS junctions in nanowires with spin-orbit coupling: role of confinement and helicity on the sub-gap spectrum
• Strong localization of Majorana end states in chains of magnetic adatoms
• Shiba states and zero-bias anomalies in the hybrid normal-superconductor Anderson model
• Majorana splitting from critical currents in Josephson junctions
• Probing Majorana Physics in Quantum Dot Shot Noise Experiments
• Signatures of Majorana Zero Modes in Spin-Resolved Current Correlations
• On controlling the bound states in quantum-dot hybrid-nanowire
• Many-body characterization of topological superconductivity: The Richardson-Gaudin-Kitaev chain
• Majorana Fermions in Chiral Topological Ferromagnetic Nanowires
• Strongly interacting Majorana fermions
• Role of dissipation in realistic Majorana nanowires
• Majorana fermions in ferromagnetic chains on the surface of bulk spin-orbit coupled $s$-wave superconductors
• Shortcuts to nonabelian braiding
• Electron temperature and tunnel coupling dependence of zero-bias and almost-zero-bias conductance peaks in Majorana nanowires
• Interplay of topological phases in magnetic adatom-chains on top of a Rashba superconducting surface
• Influence of Topological Edge States on the Properties of Al/Bi2Se3/Al Hybrid Josephson Devices
• Self-organized topological state in the magnetic chain on the surface of a superconductor
• Supercurrent interference in few-mode nanowire Josephson junctions
• Assembling Fibonacci Anyons From a ${\mathbb{Z}}_3$ Parafermion Lattice Model
• Majorana Fermions in Magnetic Chains
• Optimal Control of Majorana Zero Modes
• Topological superfluid in a Fermi-Bose mixture with a high critical temperature
• Criticality in Translation-Invariant Parafermion Chains
• Finite-size effects in a nanowire strongly coupled to a thin superconducting shell
• Quench dynamics and parity blocking in Majorana wires
• Impurity-induced bound states in superconductors with spin-orbit coupling
• Topological superconductivity in planar Josephson junctions: Narrowing down to the nanowire limit
• Presence versus absence of end-to-end nonlocal conductance correlations in Majorana nanowires: Majorana bound states versus Andreev bound states
• Dephasing and leakage dynamics of noisy Majorana-based qubits: Topological versus Andreev
• Detecting topological superconductivity using low-frequency doubled Shapiro steps
• Current noise cross correlation mediated by Majorana bound states
• Anomalous Proximity Effect and Theoretical Design for its Realization
• Tilting of the magnetic field in Majorana nanowires: critical angle and zero-energy differential conductance
• Tunneling transport in NSN junctions made of Majorana nanowires across the topological quantum phase transition
• General framework for transport in spin-orbit-coupled superconducting heterostructures: Nonuniform spin-orbit coupling and spin-orbit-active interfaces
• Electronic structure of full-shell InAs/Al hybrid semiconductor-superconductor nanowires: Spin-orbit coupling and topological phase space
• Superconductivity in the surface state of noble metal gold and its Fermi level tuning by EuS dielectric
• Thermopower of three-terminal topological superconducting systems
• DIII Topological Superconductivity with Emergent Time-Reversal Symmetry
• Full proximity treatment of topological superconductors in Josephson-junction architectures
• Effects of tilting the magnetic field in 1D Majorana nanowires
• Universal nonequilibrium signatures of Majorana zero modes in quench dynamics
• Spontaneous Formation of a Superconductor-Topological Insulator-Normal Metal Layered Heterostructure
• Proximity-induced superconductivity and Josephson critical current in quantum spin Hall systems
• Phenomenology of soft gap, zero bias peak, and zero mode splitting in ideal Majorana nanowires
• Majorana fermion exchange in strictly one dimensional structures
• Magnetic-Field-Induced Topological Reorganization of a P-wave Superconductor
• Conductance spectroscopy of nontopological-topological superconductor junctions
• Majorana Bound States in Double Nanowires with Reduced Zeeman Thresholds due to Supercurrents
• Robustness of Topological Superconductivity in Proximity-Coupled Topological Insulator Nanoribbons
• Generalized Eilenberger theory for Majorana zero-mode-carrying disordered $p$-wave superconductors
• Topological superfluidity of lattice fermions inside a Bose-Einstein condensate
• Conductance interference in a superconducting Coulomb blockaded Majorana ring
• Enhanced current noise correlations in a Coulomb-Majorana device
• Realizing Topological Superconductivity with Superlattices
• Viewing Majorana Bound States by Rabi Oscillations
• Observation of fractional quantum Hall effect in an InAs quantum well
• Probing Majorana-like states in quantum dots and quantum rings
• Majorana states and magnetic orbital motion in planar hybrid nanowires
• Substrate-induced Majorana renormalization in topological nanowires
• Possibility of adiabatic transport of a Majorana edge state through an extended gapless region
• Measurement-only topological quantum computation without forced measurements
• Topological superconductivity at finite temperatures in proximitized magnetic nanowires
• Influence of long-range interaction on Majorana zero modes
• Majorana phase-gate based on the geometric phase
• Renormalization of the Majorana bound state decay length in a perpendicular magnetic field
• Tunnel spectroscopy of Majorana bound states in topological superconductor-quantum dot Josephson junctions
• Evidence for a New Excitation at the Interface Between a High-Tc Superconductor and a Topological Insulator
• Current distributions in stripe Majorana junctions
• Quantum Criticality in Resonant Andreev Conduction
• Unitary preparation of many body Chern insulators: Adiabatic bulk boundary correspondence
• Zero-energy bound state at the interface between an $s$-wave superconductor and a disordered normal metal with repulsive electron-electron interactions
• Entangled states of two quantum dots mediated by Majorana fermions
• High critical temperature nodal superconductors as building block for time-reversal invariant topological superconductivity
• Interaction effects in superconductor/quantum spin Hall devices: universal transport signatures and fractional Coulomb blockade
• Majorana transport in superconducting nanowire with Rashba and Dresselhaus spin-orbit couplings
• A Study of Topological Quantum Phase Transition and Majorana Localization Length for the Interacting Helical Liquid System
• Tuning spin orbit interaction in high quality gate-defined InAs one-dimensional channels
• Optical absorption of semiconductor 2D Majorana nanowires
• Quantized conductance in a one-dimensional ballistic oxide nanodevice
• Magnetic Susceptibility of Dirac Fermions, Bi-Sb Alloys, Interacting Bloch Fermions, Dilute Nonmagnetic Alloys, and Kondo Alloys