Tunneling dynamics between superconducting bound states at the atomic limit

Abstract

Despite plenty of room at the bottom, there is a limit to the miniaturization of every process. For charge transport this is realized by the coupling of single discrete energy levels at the atomic scale. Here, we demonstrate sequential tunneling between parity protected Yu-Shiba-Rusinov (YSR) states bound to magnetic impurities located on the superconducting tip and sample of a scanning tunneling microscope at 10 mK. We reduce the relaxation of the excited YSR state to the bare minimum and find an enhanced lifetime for single quasiparticle levels. Our work offers a way to characterize and to manipulate coupled superconducting bound states, such as Andreev levels, YSR states, or Majorana bound states.

arXiv comment14 pages, 10 figures incl. supplementary information

References in corpus (20)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Reading and Writing Single-Atom Magnets
• Spontaneous Emission Spectrum in Double Quantum Dot Devices
• Revealing the electronic structure of a carbon nanotube carrying a supercurrent
• Spectral Properties of Quasiparticle Excitations Induced by Magnetic Moments in Superconductors
• Coherent manipulation of Andreev states in superconducting atomic contacts
• High-resolution studies of the Majorana atomic chain platform
• Single magnetic adsorbates on s-wave superconductors
• Exciting Andreev pairs in a superconducting atomic contact
• Tunneling processes into localized subgap states in superconductors
• Top-transmon: hybrid superconducting qubit for parity-protected quantum computation
• Local Electronic Structure of a Single Magnetic Impurity in a Superconductor
• A road to reality with topological superconductors
• Evidence for long-lived quasiparticles trapped in superconducting point contacts
• The energy resolution function of a tunnel junction
• Dynamics of quasiparticle trapping in Andreev levels
• Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots
• Non-equilibrium theory of tunneling into localized state in superconductor
• Robustness of Yu-Shiba-Rusinov resonances in presence of a complex superconducting order parameter

Cited by in corpus (40)

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• Atomic-scale spin-polarization maps using functionalized superconducting probes
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• Threefold enhancement of superconductivity and the role of field-induced odd-frequency pairing in epitaxial aluminum films near the 2D limit
• Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots
• Yu-Shiba-Rusinov qubit
• Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor ${\mathrm{FeTe}}_{0.55}{\mathrm{Se}}_{0.45}$
• Superconducting Quantum Interference at the Atomic Scale
• Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick-slip approach and an energy resolution below 8$\mu$eV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au
• Pair excitations of a quantum spin on a proximitized superconductor
• Surrogate model solver for impurity-induced superconducting subgap states
• Quantum Yu-Shiba-Rusinov dimers
• Coherent and incoherent tunneling into YSR states revealed by atomic scale shot-noise spectroscopy
• Tunneling processes between Yu-Shiba-Rusinov bound states
• Near-monochromatic tuneable cryogenic niobium electron field emitter
• Direct Transport between Superconducting Subgap States in a Double Quantum Dot
• Zeeman effects on Yu-Shiba-Rusinov states
• Yu-Shiba-Rusinov states in 2D superconductors with arbitrary Fermi contours
• Interplay between Majorana and Shiba states in a minimal Kitaev chain coupled to a superconductor
• Universal scaling of tunable Yu-Shiba-Rusinov states across the quantum phase transition
• Tracking a Spin-Polarized Superconducting Bound State across a Quantum Phase Transition
• Quasiparticle focusing of bound states in two-dimensional $s$-wave superconductors
• Full Counting Statistics of Yu-Shiba-Rusinov Bound States
• Effect of Van Hove singularities on Shiba states in two-dimensional $s$-wave superconductors
• Non-contact Andreev reflection as a direct probe of superconductivity on the atomic scale
• Quantum phase transition in magnetic nanographenes on a lead superconductor
• Nonequilibrium Fractional Josephson Effect
• Microwave Excitation of Atomic Scale Superconducting Bound States
• Dynamical torques from Shiba states in $s$-wave superconductors
• Anisotropy of Yu-Shiba-Rusinov states in NbSe${}_2$
• The feedback driven atomic scale Josephson microscope
• Underscreened Kondo Compensation in a Superconductor
• Characterizing local Majorana properties using Andreev states
• Inelastic tunneling through normal and superconducting junctions in the presence of photonic bath within Lindbladian formalism
• DC Josephson effect between two Yu-Shiba-Rusinov bound states
• Fermi-Level Pinning of Yu-Shiba-Rusinov States in a Superconductor with Weakly Broken Spin-Rotational Invariance
• Sub-gap Fano resonances in a topological superconducting wire with on-site Coulomb interactions
• Spin-dependent tunneling between individual superconducting bound states
• Diode effect in microwave irradiated Josephson junctions with Yu-Shiba-Rusinov states