Mirage Andreev Spectra Generated by Mesoscopic Leads in Nanowire Quantum Dots - Université Toulouse 3 Accéder directement au contenu
Article Dans Une Revue Physical Review Letters Année : 2018

Mirage Andreev Spectra Generated by Mesoscopic Leads in Nanowire Quantum Dots

Résumé

We study transport mediated by Andreev bound states formed in InSb nanowire quantum dots. Two kinds of superconducting source and drain contacts are used: epitaxial Al/InSb devices exhibit a doubling of tunneling resonances, while, in NbTiN=InSb devices, Andreev spectra of the dot appear to be replicated multiple times at increasing source-drain bias voltages. In both devices, a mirage of a crowded spectrum is created. To describe the observations a model is developed that combines the effects of a soft induced gap and of additional Andreev bound states both in the quantum dot and in the finite regions of the nanowire adjacent to the quantum dot. Understanding of Andreev spectroscopy is important for the correct interpretation of Majorana experiments done on the same structures.
Fichier principal
Vignette du fichier
[051].pdf (1.39 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02332284 , version 1 (24-10-2019)

Identifiants

Citer

Z Su, A. Zarassi, J.-F Hsu, P San-Jose, E Prada, et al.. Mirage Andreev Spectra Generated by Mesoscopic Leads in Nanowire Quantum Dots. Physical Review Letters, 2018, 121 (12), pp.127705. ⟨10.1103/PhysRevLett.121.127705⟩. ⟨hal-02332284⟩
35 Consultations
18 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More