Journal
PHYSICAL REVIEW B
Volume 94, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.94.064520
Keywords
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Funding
- EU FP7 project SE2ND (Source of Entangled Electrons in Nano Devices)
- Carlsberg Foundation
- Danish Research Council DFF-FNU
- Danish National Research Foundation
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We present transport spectroscopy of subgap states in a bottom gated InAs nanowire coupled to a normal lead and a superconducting aluminium lead. The device shows clearly resolved subgap 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 subgap excitations.
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