Quantum Dot coupled to a normal and a superconducting lead

M. R. Graeber; T. Nussbaumer; W. Belzig; C. Schoenenberger

doi:10.1088/0957-4484/15/7/056

paper

Quantum Dot coupled to a normal and a superconducting lead

arXiv:cond-mat/0403431 · doi:10.1088/0957-4484/15/7/056

Abstract

We report on electrical transport measurements in a carbon nanotube quantum dot coupled to a normal and a superconducting lead. Depending on the ratio of Kondo temperature $T_{K}$ and superconducting gap $Δ$ the zero bias conductance resonance either is split into two side-peaks or persists. We also compare our data with a simple model of a resonant level - superconductor interface.

8 pages, 4 figures