Heat Capacity of MgB_2: Evidence for Moderately Strong Coupling Behavior
| dc.creator | Kremer, R. K. | |
| dc.creator | Gibson, B. J. | |
| dc.creator | Ahn, K. | |
| dc.date | 2001-02-23 | |
| dc.date | 2001-04-17 | |
| dc.date.accessioned | 2026-07-07T02:40:30Z | |
| dc.date.available | 2026-07-07T02:40:30Z | |
| dc.description | We characterize the superconducting state of phase pure polycrystalline samples of the new layered superconductor MgB$_2$ by specific heat measurements in magnetic fields up to 9 T. The characteristic jump at the superconducting transition is observed and compared with the predictions of weak coupling BCS-theory and the $α$-model. Our analysis shows excellent agreement with the predictions for 2$Δ/k_BT_{\rm C}$ = 4.2(2) with a Sommerfeld term $γ_{\rm exp}$ of 3.1(1) mJ/mol K$^2$ indicating that MgB$_2$ is a superconductor in the moderately strong electron-phonon coupling regime. | |
| dc.description | 10 pages, 3 figures. RevTeX. Submitted to Phys. Rev. Lett | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0102432 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0102432 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/17403 | |
| dc.subject | Superconductivity | |
| dc.title | Heat Capacity of MgB_2: Evidence for Moderately Strong Coupling Behavior | |
| dc.type | text |