Mirage Andreev Spectra Generated by Mesoscopic Leads in Nanowire Quantum Dots
Mirage Andreev Spectra Generated by Mesoscopic Leads in Nanowire Quantum Dots
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 $\mathrm{NbTiN}/\mathrm{InSb}$ devices, Andreev spectra of the dot appear to be replicated multiple times at increasing …