Point-Contact Spectroscopy of Superconductors
Abstract
The point-contact spectroscopy, in contrast to the tunneling spectrocopy, considers small electrical contacts with direct conductivity. In the normal state, it enables one to measure the spectral function of electron-boson interaction. In the superconducting state, new features appear connected with the energy dependence of excess current. The non-linearities of the current-voltage characteristic are due to: i) The inelastic scattering of electron quasiparticles in the contact region; ii) The energy dependence of the superconducting energy gap, and iii) The non-equilibrium superconducting effects. These effects are discussed from the experimental point of view
Keywords
Cite
@article{arxiv.cond-mat/0008116,
title = {Point-Contact Spectroscopy of Superconductors},
author = {I. K. Yanson},
journal= {arXiv preprint arXiv:cond-mat/0008116},
year = {2007}
}
Comments
17 pages, 8 figures. Presented at NATO ASI "Quantum Mesoscopic Phenomena and Mesoscopic Devices in Microelectronics", Ankara-Antalya, 14-25 June 1999