Tuning Yu-Shiba-Rusinov States in a Quantum Dot

Abstract

We present transport spectroscopy of sub-gap states in a bottom gated InAs nanowire coupled to a normal lead and a superconducting aluminium lead. The device shows clearly resolved sub-gap states which we can track as the coupling parameters of the system are tuned and as the gap is closed by means of a magnetic field. We systematically extract system parameters by using numerical renormalization group theory fits as a level of the quantum dot is tuned through a quantum phase transition electrostatically and magnetically. We also give an intuitive description of sub-gap excitations.

9 pages, 10 figures

References in corpus (11)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• The numerical renormalization group method for quantum impurity systems
• Zero-bias anomaly in a nanowire quantum dot coupled to superconductors
• Parity qubits and poor man's Majorana bound states in double quantum dots
• Critical Current 0-$\pi$ Transition in Designed Josephson Quantum Dot Junctions
• Transport Through Andreev Bound States in a Graphene Quantum Dot
• Shiba states and zero-bias anomalies in the hybrid normal-superconductor Anderson model
• Numerical Renormalization Group Approach to a Quantum Dot Coupled to Normal and Superconducting Leads
• Transport Measurement of Andreev Bound States in a Kondo-Correlated Quantum Dot
• Superconductivity-enhanced bias spectroscopy in carbon nanotube quantum dots

Cited by in corpus (47)

• A two-site Kitaev chain in a two-dimensional electron gas
• A perspective on semiconductor-based superconducting qubits
• Scaling of Yu-Shiba-Rusinov energies in the weak-coupling Kondo regime
• Robust poor man's Majorana zero modes using Yu-Shiba-Rusinov states
• Spectroscopy of the superconducting proximity effect in nanowires using integrated quantum dots
• Yu-Shiba-Rusinov states of impurities in a triangular lattice of NbSe${}_2$ with spin orbit coupling
• Observation of edge and bulk states in a three-site Kitaev chain
• Excitations in a superconducting Coulombic energy gap
• Josephson-phase-controlled interplay between correlation effects and electron pairing in a three-terminal nanostructure
• Dynamical quantum phase transitions in a mesoscopic superconducting system
• Surrogate model solver for impurity-induced superconducting subgap states
• From Cooper pair splitting to the non-local spectroscopy of a Shiba state
• Evidence of Andreev blockade in a double quantum dot coupled to a superconductor
• Zeeman-driven parity transitions in an Andreev quantum dot
• Magnetic impurities in spin-split superconductors
• Direct Transport between Superconducting Subgap States in a Double Quantum Dot
• Josephson junctions in double nanowires bridged by in-situ deposited superconductors
• Fermion-parity qubit in a proximitized double quantum dot
• Nb/InAs nanowire proximity junctions from Josephson to quantum dot regimes
• Zeeman effects on Yu-Shiba-Rusinov states
• A quantum dot in germanium proximitized by a superconductor
• Inductive microwave response of Yu-Shiba-Rusinov states
• Strong nonlocal tuning of the current-phase relation of a quantum dot based Andreev molecule
• Nonlocal measurement of quasiparticle charge and energy relaxation in proximitized semiconductor nanowires using quantum dots
• Josephson current via spin and orbital states of a tunable double quantum dot
• Tunable reentrant Kondo effect in quantum dots coupled to metal-superconducting hybrid reservoirs
• Charge sensing the parity of an Andreev molecule
• Spin-resolved spectroscopy using a quantum dot defined in InAs 2DEG
• Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory
• Spin-filtered measurements of Andreev bound states
• Yu-Shiba-Rusinov States and Ordering of Magnetic Impurities Near the Boundary of a Superconducting Nanowire
• Double-quantum-dot Andreev molecules: Phase diagrams and critical evaluation of effective models
• Supercurrent through an Andreev trimer
• Theory of a Single Magnetic Impurity on a Thin Metal Film in Proximity to a Superconductor
• Subgap transport in superconductor--semiconductor hybrid islands: Weak and strong coupling regimes
• A flux-controlled two-site Kitaev chain
• Probing Magnetic and Triplet Correlations in Spin-Split Superconductors with Magnetic Impurities
• Robust Spin Polarization of Yu-Shiba-Rusinov States in Superconductor/Ferromagnetic Insulator Heterostructures
• Superconducting quantum dot and the sub-gap states
• Renormalized and iterative formalism of the Andreev levels within large multi-parametric space
• Kondo Compensation in a Pseudogap Phase: a Renormalization Group Study
• Slave-spin approach to the Anderson-Josephson quantum dot
• Nonlocal signatures of hybridization between quantum dot and Andreev bound states
• Andreev molecule in parallel InAs nanowires
• Determination of the current-phase relation of an InAs 2DEG Josephson junction with a microwave resonator
• Effects of electron-electron interaction and spin-orbit coupling on Andreev pair qubits in quantum dot Josephson junctions
• Electronic transport in double-nanowire superconducting islands with multiple terminals