Self-energy Effect of Superconducting Energy Gap in Point-Contact Spectra of MgB$_2$
| dc.creator | Yanson, I. K. | |
| dc.creator | Beloborod'ko, S. I. | |
| dc.creator | Naidyuk, Yu. G. | |
| dc.creator | Dolgov, O. V. | |
| dc.creator | Golubov, A. A. | |
| dc.date | 2003-10-24 | |
| dc.date | 2003-11-06 | |
| dc.date.accessioned | 2026-07-07T02:54:23Z | |
| dc.date.available | 2026-07-07T02:54:23Z | |
| dc.description | In strong-coupling superconductors with a short electron mean free path the self-energy effects in the superconducting order parameter play a major role in the phonon manifestation of the point-contact spectra at the above-gap energies. We derive asymptotic expressions of the phonon structure in MgB$%_{2}$ in the case $eV\ggΔ$ for tunnel, ballistic, and diffusive point-contacts and show that these expressions not only qualitatively, but also semi-quantitatively correspond to the measurements of the phonon structure in the point-contact spectra for the $π$-band of MgB$_{2}$ c-axis oriented thin films. | |
| dc.description | 4 pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0310577 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0310577 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/22528 | |
| dc.subject | Superconductivity | |
| dc.title | Self-energy Effect of Superconducting Energy Gap in Point-Contact Spectra of MgB$_2$ | |
| dc.type | text |