de Gennes-Saint-James resonant transport in Nb/GaAs/AlGaAs heterostructures
Abstract
Resonant transport is demonstrated in a hybrid superconductor-semiconductor heterostructure junction grown by molecular beam epitaxy on GaAs. This heterostructure realizes the model system introduced by de Gennes and Saint-James in 1963 [P. G. de Gennes and D. Saint-James, Phys. Lett. {\bf 4}, 151 (1963)]. At low temperatures a single marked resonance peak is shown superimposed to the characteristic Andreev-dominated subgap conductance. The observed magnetotransport properties are successfully analyzed within the random matrix theory of quantum transport, and ballistic effects are included by directly solving the Bogoliubov-de Gennes equations.
- Publication:
-
arXiv e-prints
- Pub Date:
- October 2001
- DOI:
- 10.48550/arXiv.cond-mat/0110183
- arXiv:
- arXiv:cond-mat/0110183
- Bibcode:
- 2001cond.mat.10183G
- Keywords:
-
- Condensed Matter - Superconductivity;
- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- 10 pages, 5 figures, to be published in Phys. Rev. Lett