Tunneling spectroscopy in small grains of superconducting MgB2

Preprint

4 April 2001

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0102242

Abstract

We report on tunneling spectroscopy experiments in small grains of the new binary intermetallic superconductor MgB2. Experiments have been performed at 2.5 K using a low temperature scanning tunneling microscope. Good fit to the BCS model is obtained, with a gap value of 2 meV. In the framework of this model, this value should correspond to a surface critical temperature of 13.2 K. No evidence of gap anisotropy has been found.

Keywords

TUNNELING SPECTROSCOPY
SUPERCONDUCTING
SUPERCONDUCTOR
INTERMETALLIC
SMALL GRAINS
TEMPERATURE
ANISOTROPY
MGB2

All Related Versions

Version 1, 2001-02-13, ArXiv
Version 2, 2001-04-04, ArXiv
Published version: Physical Review Letters, 86 (24), 5582.

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