Transport spectroscopy of NS nanowire junctions with Majorana fermions

Abstract

We investigate transport though normal-superconductor nanowire junctions in the presence of spin-orbit coupling and magnetic field. As the Zeeman field crosses the critical bulk value B_c of the topological transition, a Majorana bound state (MBS) is formed, giving rise to a sharp zero-bias anomaly (ZBA) in the tunneling differential conductance. We identify novel features beyond this picture in wires with inhomogeneous depletion, like the appearance of two MBSs inside a long depleted region for B<B_c. The resulting ZBA is in most cases weakly split and may coexist with Andreev bound states near zero energy. The ZBA may appear without evidence of a topological gap closing. This latter aspect is more evident in the multiband case and stems from a smooth pinch-off barrier. Most of these features are in qualitative agreement with recent experiments [Mourik et al, Science 336, 1003 (2012)]. We also discuss the rich phenomenology of the problem in other regimes which remain experimentally unexplored.

10 pages, 12 figures. Published version, supplementary material included

References in corpus (10)

• 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
• Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
• Non-Abelian quantum order in spin-orbit-coupled semiconductors: The search for topological Majorana particles in solid state systems
• Zero-bias anomaly in a nanowire quantum dot coupled to superconductors
• Observing Majorana Bound States in p-wave Superconductors Using Noise Measurements in Tunneling Experiments
• Splitting of Majorana modes due to intervortex tunneling in a p + ip superconductor
• Strongly disordered TiN and NbTiN s-wave superconductors probed by microwave electrodynamics
• Mutation of Andreev into Majorana bound states in long NS and SNS junctions

Cited by in corpus (155)

• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Anomalous modulation of a zero bias peak in a hybrid nanowire-superconductor device
• Towards a realistic transport modeling in a superconducting nanowire with Majorana fermions
• A Majorana smoking gun for the superconductor-semiconductor hybrid topological system
• Realization of a minimal Kitaev chain in coupled quantum dots
• InAs-Al Hybrid Devices Passing the Topological Gap Protocol
• SNS junctions in nanowires with spin-orbit coupling: role of confinement and helicity on the sub-gap spectrum
• Disorder-induced zero-bias peaks in Majorana nanowires
• Andreev rectifier: a nonlocal conductance signature of topological phase transitions
• Shiba states and zero-bias anomalies in the hybrid normal-superconductor Anderson model
• Majorana splitting from critical currents in Josephson junctions
• Majorana nanowires for topological quantum computation
• Zero bias conductance peak in Majorana wires made of semiconductor-superconductor hybrid structures
• On controlling the bound states in quantum-dot hybrid-nanowire
• Interaction effects on a Majorana zero mode leaking into a quantum dot
• Hunting for Majoranas
• Quantum anomaly, non-Hermitian skin effects, and entanglement entropy in open systems
• Majorana Fermions in Chiral Topological Ferromagnetic Nanowires
• Roadmap towards Majorana qubits and nonabelian physics in quantum dot-based minimal Kitaev chains
• Role of dissipation in realistic Majorana nanowires
• Majorana Fermions in Ge/Si Hole Nanowires
• Theory of Majorana zero modes in unconventional superconductors
• Local and non-local quantum transport due to Andreev bound states in finite Rashba nanowires with superconducting and normal sections
• Weak measurement protocols for Majorana bound state identification
• Zero-energy pinning from interactions in Majorana nanowires
• To close or not to close: the fate of the superconducting gap across the topological quantum phase transition in Majorana-carrying semiconductor nanowires
• Quantized and unquantized zero-bias tunneling conductance peaks in Majorana nanowires: Conductance below and above $2e^2/h$
• Superconducting phenomena in systems with unconventional magnets
• Charge impurity effects in hybrid Majorana nanowires
• Majorana Fermions in Magnetic Chains
• Tunable magnetic textures in spin valves: From spintronics to Majorana bound states
• Plateau regions for zero-bias peaks within 5% of the quantized conductance value $2e^2/h$
• Topological Phase Detection in Rashba Nanowires with a Quantum Dot
• Parity protected superconducting diode effect in topological Josephson junctions
• Signatures of a topological phase transition in a planar Josephson junction
• Trivial Andreev band mimicking topological bulk gap reopening in the non-local conductance of long Rashba nanowires
• Probing Majorana localization in minimal Kitaev chains through a quantum dot
• Presence versus absence of end-to-end nonlocal conductance correlations in Majorana nanowires: Majorana bound states versus Andreev bound states
• Majorana Kramers pairs in Rashba double nanowires with interactions and disorder
• Large zero bias peaks and dips in a four-terminal thin InAs-Al nanowire device
• Dephasing and leakage dynamics of noisy Majorana-based qubits: Topological versus Andreev
• Local and Nonlocal Transport Spectroscopy in Planar Josephson Junctions
• In Situ Epitaxy of Pure Phase Ultra-Thin InAs-Al Nanowires for Quantum Devices
• Josephson effect in multiterminal topological junctions
• Minimal quantum dot based Kitaev chain with only local superconducting proximity effect
• Partially-separated Majorana modes in a disordered medium
• Tunneling transport in NSN junctions made of Majorana nanowires across the topological quantum phase transition
• Tilting of the magnetic field in Majorana nanowires: critical angle and zero-energy differential conductance
• Electrostatic control of the proximity effect in the bulk of semiconductor-superconductor hybrids
• Enhanced topological superconductivity in spatially modulated planar Josephson junctions
• DIII Topological Superconductivity with Emergent Time-Reversal Symmetry
• Majorana/Andreev crossover and the fate of the topological phase transition in inhomogeneous nanowires
• Topological characterization and stability of Floquet Majorana modes in Rashba nanowire
• Recent progress on Majorana in semiconductor-superconductor heterostructures--Engineering and detection
• Full proximity treatment of topological superconductors in Josephson-junction architectures
• Entangling Spins in Double Quantum Dots and Majorana Bound States
• Conductance spectroscopy on Majorana wires and the inverse proximity effect
• Effects of tilting the magnetic field in 1D Majorana nanowires
• Crossover between trivial zero modes in Majorana nanowires
• Degeneracy lifting of Majorana bound states due to electron-phonon interactions
• Planar Josephson junctions in germanium: Effect of cubic spin-orbit interaction
• Crossed Andreev reflection in spin-polarized chiral edge states due to the Meissner effect
• Zero-frequency supercurrent susceptibility signatures of trivial and topological zero-energy states in nanowire junctions
• Proximity effect in PbTe-Pb hybrid nanowire Josephson junctions
• Effects of the electrostatic environment on superlattice Majorana nanowires
• Fusion rules in a Majorana single-charge transistor
• Suppressing Andreev bound state zero bias peaks using a strongly dissipative lead
• Prevalence of trivial zero-energy sub-gap states in non-uniform helical spin chains on the surface of superconductors
• Kitaev chain in an alternating quantum dot-Andreev bound state array
• Progress in superconductor-semiconductor topological Josephson junctions
• Identifying trivial and Majorana zero-energy modes using the Majorana polarization
• Mitigating disorder-induced zero-energy states in weakly-coupled semiconductor-superconductor hybrid systems
• Universal conductance scaling of Andreev reflections using a dissipative probe
• Quantum transport through a quantum dot side-coupled to a Majorana bound state pair in the presence of electron-phonon interaction
• Majorana differential shot noise and its universal thermoelectric crossover
• Majorana bound states in germanium Josephson junctions via phase control
• Quality factor for zero-bias conductance peaks in Majorana nanowire
• Probing Majorana-like states in quantum dots and quantum rings
• Phenomenology of Majorana zero modes in full-shell hybrid nanowires
• Robust topological superconductivity in weakly coupled nanowire-superconductor hybrid structures
• Non-Hermitian zero-energy pinning of Andreev and Majorana bound states in superconductor-semiconductor systems
• Majorana bound states in encapsulated bilayer graphene
• Quantum-dot-based Kitaev chains: Majorana quality measures and scaling with increasing chain length
• Detecting Majorana modes by readout of poisoning-induced parity flips
• Entanglement measures of Majorana bound states
• Theory of Coulomb blockaded transport in realistic Majorana nanowires
• Interplay between Majorana and Shiba states in a minimal Kitaev chain coupled to a superconductor
• Hard superconducting gap in PbTe nanowires
• Machine learning optimization of Majorana hybrid nanowires
• Effects of finite superconducting coherence lengths and of phase gradients in topological SN and SNS junctions and rings
• Large Andreev bound state zero bias peaks in a weakly dissipative environment
• Reshaping the Jaynes-Cummings ladder with Majorana bound states
• Multiterminal transport spectroscopy of subgap states in Coulomb-blockaded superconductors
• Role of Bath-Induced Many-Body Interactions in the Dissipative Phases of the Su-Schrieffer-Heeger Model
• Non-Hermiticity stabilized Majorana zero modes in semiconductor-superconductor nanowires
• Josephson effect and critical currents in trivial and topological full-shell hybrid nanowires
• Effect of topological length on Bound states signatures in a Topological nanowire
• Interference and parity blockade in transport through a Majorana box
• Nonlocality of local Andreev conductances as a probe for topological Majorana wires
• Low-temperature environments for quantum computation and quantum simulation
• Gate-tunable subband degeneracy in semiconductor nanowires
• Transport features of a topological superconducting nanowire with a quantum dot: conductance and noise
• Absence of Majorana oscillations in finite-length full-shell hybrid nanowires
• Nonequilibrium finite frequency resonances in differential quantum noise driven by Majorana interference
• Edge states, Majorana fermions and topological order in superconducting wires with generalized boundary conditions
• Diagnosing Topological Phase Transitions in 1D Superconductors using Berry Singularity Markers
• Probing Majorana bound states through an inhomogeneous Andreev double dot interferometer
• Fraunhofer pattern in the presence of Majorana zero modes
• Detecting a quantum critical point in topological SN junctions
• Subgap states in semiconductor-superconductor devices for quantum technologies: Andreev qubits and minimal Majorana chains
• Delocalized states in three-terminal superconductor-semiconductor nanowire devices
• Dynamical approach to improving Majorana qubits and distinguishing them from trivial bound states
• Odd-frequency pairing due to Majorana and trivial Andreev bound states
• Reducing disorder in PbTe nanowires for Majorana research
• Enhanced $2\pi$-periodic Aharonov-Bohm Effect as a Signature of Majorana Zero Modes Probed by Nonlocal Measurements
• Topological gap protocol based machine learning optimization of Majorana hybrid wires
• Stabilizing topological superconductivity in disordered spin-orbit coupled semiconductor-superconductor heterostructures
• Photonic cross-noise spectroscopy of Majorana bound states
• Disorder effects in planar semiconductor-superconductor structures: Majorana wires versus Josephson junctions
• Topological phase transition driven by magnetic field in one-dimensional topological superconductor rings
• Anomalous proximity effect under Andreev and Majorana bound states
• Challenges in detecting topological superconducting transitions via supercurrent and phase probes in planar Josephson junctions
• Capacitance-based Fermion parity read-out and predicted Rabi oscillations in a Majorana nanowire
• Quantized Andreev conductance in semiconductor nanowires
• Moiré dispersion of edge states in spin chains on superconductors
• Superconductor/normal-metal/superconductor junction of topological superconductors revisited: Fractional Josephson current, fermion parity, and oscillating wavefunctions
• Theoretical proposal to obtain strong Majorana evidence from scanning tunneling spectroscopy of a vortex with a dissipative environment
• Anisotropy of PbTe nanowires with and without a superconductor
• Noise-Tolerance of Majorana Teleportation in Mesoscopic Topological Superconductors
• Kitaev ring threaded by a magnetic flux: Topological gap, Anderson localization of quasiparticles, and divergence of supercurrent derivative
• In situ tuning of dynamical Coulomb blockade on Andreev bound states in hybrid nanowire devices
• Honing in on a topological zero-bias conductance peak
• From Majorana fermions to topological quantum computation in semiconductor/superconductor heterostructures
• Characterizing local Majorana properties using Andreev states
• Transport and fusion of Majorana zero modes in the presence of nonadiabatic transitions
• Majorana polarization in disordered heterostructures
• Thermoelectric fluctuations of interfering Majorana bound states
• Enhanced superconductivity in PbTe-In hybrids
• Super-Poissonian noise from quasiparticle poisoning in electron transport through a pair of Majorana bound states
• Quantifying the non-Abelian property of Andreev bound states in inhomogeneous Majorana nanowires
• Transport-based fusion that distinguishes between Majorana and Andreev bound states
• Confinement-induced zero-bias peaks in conventional superconductor hybrids
• Chiral adiabatic transmission protected by Fermi surface topology
• Exponential suppression of the topological gap in self-consistent intrinsic Majorana nanowires
• Strong enhancement of g-factor in PbTe-Pb hybrid nanowires
• Theory of Berry Singularity Markers: Diagnosing Topological Phase Transitions via Lock-In Tomography
• Creating and detecting poor man's Majorana bound states in interacting quantum dots
• Distinguishing Majorana bound states from accidental zero-energy modes with a microwave cavity
• Odd-frequency Pairing in Josephson Junctions Coupled by Magnetic Textures
• Majorana modes in graphene strips: polarization, wavefunctions, disorder, and Andreev states
• Presence versus absence of charging energies in PbTe quantum dots
• Limits of Thermal Conductance Quantization in Chiral Topological Josephson Junctions
• Absence of Quasi-Majorana False Positives in Full-Shell Hybrid Nanowires
• Fluctuation response of a minimal Kitaev chain in nonequilibrium states
• Majorana bound states with chiral magnetic textures