Anomalous Fano Resonance in Double Quantum Dot System Coupled to Superconductor
arXiv:2004.04525 · doi:10.1038/s41598-020-59498-y
Abstract
We analyze the influence of a local pairing on the quantum interference in nanoscopic systems. As a model system we choose the double quantum dot coupled to one metallic and one superconducting electrode in the T-shape geometry. The analysis is particularly valuable for systems containing coupled objects with considerably different broadening of energy levels. In such systems, the scattering of itinerant electrons on a discrete (or narrow) energy level gives rise to the Fano-type interference. Systems with induced superconducting order, along well understood Fano resonances, exhibit also another features on the opposite side of the Fermi level. The lineshape of these resonances differs significantly from their reflection on the opposite side of the Fermi level, and their origin was not fully understood. Here, considering the spin-polarized tunneling model, we explain a microscopic mechanism of a formation of these resonances and discuss the nature of their uncommon lineshapes. We show that the anomalous Fano profiles originate solely from the pairing of nonscattered electrons with scattered ones. We investigate also the interplay of each type of resonances with the Kondo physics and discuss the resonant features in differential conductivity.
arXiv comment16 pages, 7 figures; wlscirep pdfLaTeX class. This is author-created e-print version of the article published in Scientific Reports
References in corpus (49)
- Fano resonances in nanoscale structures
- Majorana bound states in a coupled quantum-dot hybrid-nanowire system
- Spin-resolved Andreev levels and parity crossings in hybrid superconductor-semiconductor nanostructures
- Fano Resonances in Electronic Transport through a Single Electron Transistor
- Probing Atomic Structure and Majorana Wavefunctions in Mono-Atomic Fe-chains on Superconducting Pb-Surface
- Phase-change chalcogenide glass metamaterial
- Kondo Correlations and the Fano Effect in Closed AB-Interferometers
- Fano and Kondo resonance in electronic current through nanodevices
- Self-consistent description of Andreev bound states in Josephson quantum dot devices
- Spectral properties of locally correlated electrons in a BCS superconductor
- Fano resonances as a probe of phase coherence in quantum dots
- Interference Effects on Kondo-Assisted Transport through Double Quantum Dots
- Electron transport in single wall carbon nanotube weak links in the Fabry-Perot regime
- Fano-Kondo interplay in a side-coupled double quantum dot
- Fano-Kondo effect in side-coupled double quantum dots at finite temperatures and the importance of the two-stage Kondo screening
- Numerical Renormalization Group Approach to a Quantum Dot Coupled to Normal and Superconducting Leads
- Resonant-State Expansion of the Fano Peak in Open Quantum Systems
- Andreev bound states probed in three-terminal quantum dots
- Interplay of Kondo and superconducting correlations in the nonequilibrium Andreev transport through a quantum dot
- Kondo resonances and Fano antiresonances in transport through quantum dots
- Fano Resonances in Majorana Bound States - Quantum Dot Hybrid Systems
- Supercurrent in a double quantum dot
- Quantum Dot coupled to a normal and a superconducting lead
- Fano-type interference in quantum dots coupled between metallic and superconducting leads
- Andreev Transport through Side-Coupled Double Quantum Dots
- Spin-polarized Andreev transport influenced by Coulomb repulsion through two quantum dot system
- Kondo and Majorana signatures near the singlet-doublet quantum phase transition
- Constructive influence of the induced electron pairing on the Kondo state
- Orbital signatures of Fano-Kondo line shapes in STM adatom spectroscopy
- Perfect spin polarization in T-shaped double quantum dots due to the spin-dependent Fano effect
- Core Excited Fano-Resonances in Exotic Nuclei
- Correlated electron transport through double quantum dots coupled to normal and superconducting leads
- Quantum interference between nuclear excitation by electron capture and radiative recombination
- Spin-resolved interference due to Majorana state on interface between normal and superconducting leads
- A Double Quantum Dot Spin Valve
- Electron Transport through T-Shaped Double-Dots System
- Decoherence effect on the Fano lineshapes in double quantum dots coupled between normal and superconducting leads
- Photoinduced Fano-resonance of coherent phonons in zinc
- Fano effect and Andreev bound states in T-shape double quantum dots
- Leakage of Majorana mode into correlated quantum dot nearby its singlet-doublet crossover
- Fano-Andreev effect in T-shape double-quantum-dot in the Kondo regime
- Interplay between electron pairing and Dicke effect in triple quantum dots structures
- Fano-Majorana effect and bound states in the continuum on a crossbar-shaped quantum dot hybrid structure
- Replicas of the Fano resonances induced by phonons in a subgap Andreev tunneling
- Quantum periodicity in the critical current of superconducting rings with asymmetric link-up of current leads
- Multiple superconducting ring ratchets for ultrasensitive detection of non-equilibrium noise
- Fano effect in an ultracold atom-molecule coupled system
- Exchange interaction and Fano resonances in diatomic molecular systems
- A T-shaped double quantum dot system as a Fano interferometer: interplay of coherence and correlation upon spin currents