Phase controlled superconducting proximity effect probed by tunneling spectroscopy
Mesoscale and Nanoscale Physics
2008-12-18 v1
Abstract
Using a dual-mode STM-AFM microscope operating below 50mK we measured the Local Density of States (LDoS) along small normal wires connected at both ends to superconductors with different phases. We observe that a uniform minigap can develop in the whole normal wire and in the superconductors near the interfaces. The minigap depends periodically on the phase difference. The quasiclassical theory of superconductivity applied to a simplified 1D model geometry accounts well for the data.
Cite
@article{arxiv.0804.2382,
title = {Phase controlled superconducting proximity effect probed by tunneling spectroscopy},
author = {H. Le Sueur and P. Joyez and H. Pothier and C. Urbina and D. Esteve},
journal= {arXiv preprint arXiv:0804.2382},
year = {2008}
}
Comments
Accepted for publication in Physical Review Letters