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arXiv · cond-mat/0106299

Local spectroscopy of a proximity superconductor at very low temperature

N. Moussy·H. Courtois·B. Pannetier
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Abstract

We performed the local spectroscopy of a Normal-metal--Superconductor (N-S) junction with the help of a very low temperature (60 mK) Scanning Tunneling Microscope (STM). The spatial dependence of the local density of states was probed locally in the vicinity of the N-S interface. We observed spectra with a fully-developed gap in the regions where a thin normal metal layer caps the superconductor dot. Close to the S metal edge, a clear pseudo-gap shows up, which is characteristic of the superconducting proximity effect in the case of a long normal metal. The experimental results are compared to the predictions of the quasiclassical theory.

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N. Moussy, H. Courtois, B. Pannetier. 2001-06-15. Local spectroscopy of a proximity superconductor at very low temperature. https://doi.org/10.1209/epl%2Fi2001-00361-2

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