Superconducting density of states at the border of an amorphous thin film grown by focused-ion-beam

Details Superconducting density of states at the border of an amorphous thin film grown by focused-ion-beam Superconducting density of states at the border of an amorphous thin film grown by focused-ion-beam

2009-02-24

arxiv.org/abs/0902.4090v1

Physics

Condensed Matter

Superconductivity

To appear in Journal of Physics: Conference series

Scientific paper

10.1088/1742-6596/150/5/052064

We present very low temperature Scanning Tunneling Microscopy and Spectroscopy (STM/S) measurements of a W based amorphous thin film grown with focused-ion-beam. In particular, we address the superconducting properties close to the border, where the thickness of the superconducting film decreases, and the Au substrate emerges. When approaching the Au substrate, the superconducting tunneling conductance strongly increases around the Fermi level, and the quasiparticle peaks do not significantly change its position. Under magnetic fields, the vortex lattice is observed, with vortices positioned very close to the Au substrate.

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