Systematic study of the two band/two gap superconductivity in carbon-substituted MgB2 by point-contact spectroscopy
| dc.creator | Holanova, Z. | |
| dc.creator | Szabo, P. | |
| dc.creator | Samuely, P. | |
| dc.creator | Wilke, R. H. T. | |
| dc.creator | Bud'ko, S. L. | |
| dc.creator | Canfield, P. C. | |
| dc.date | 2004-04-05 | |
| dc.date.accessioned | 2026-07-07T12:27:13Z | |
| dc.date.available | 2026-07-07T12:27:13Z | |
| dc.description | Point-contact measurements on the carbon-substituted Mg(B$_{1-x}$C$_x$)$_2$ filament/powder samples directly reveal a retention of the two superconducting energy gaps in the whole doping range from $x = 0$ to $x \approx 0.1$. The large gap on the $σ$-band is decreased in an essentially linear fashion with increasing the carbon concentrations. The changes in the the small gap $Δ_π$ up to 3.8 % C are proportionally smaller and are more difficult to detect but for the heavily doped sample with $x \approx 0.1$ and $T_c = 22$ K both gaps are still present, and significantly reduced, consistent with a strong essentially linear, reduction of each gap with the transition temperature. | |
| dc.description | 5 eps figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0404096 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0404096 | |
| dc.identifier | PHYSICAL REVIEW B 70, 064520 (2004) | |
| dc.identifier | doi:10.1103/PhysRevB.70.064520 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215135 | |
| dc.subject | Superconductivity | |
| dc.subject | Materials Science | |
| dc.title | Systematic study of the two band/two gap superconductivity in carbon-substituted MgB2 by point-contact spectroscopy | |
| dc.type | text |