dc.creator | Mishonov, TM | |
dc.creator | Penev, ES | |
dc.creator | Indekeu, JO | |
dc.creator | Pokrovsky, Valery L. | |
dc.date.accessioned | 2012-09-19T20:05:32Z | |
dc.date.available | 2012-09-19T20:05:32Z | |
dc.date.issued | 2003 | |
dc.identifier.citation | TM Mishonov, ES Penev, JO Indekeu and Valery L. Pokrovsky. Phys.Rev.B 68 104517 2003."Copyright (2003) by the American Physical Society." | en |
dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevB.68.104517 | |
dc.identifier.uri | https://hdl.handle.net/1969.1/146794 | |
dc.description | Journals published by the American Physical Society can be found at http://journals.aps.org/ | en |
dc.description.abstract | The Ginzburg-Landau coefficients and the jump of the specific heat are calculated for a disordered two-band superconductor. We start with the analysis of a more general case with arbitrary anisotropy. While the specific-heat discontinuity at the critical temperature T-c decreases with increasing disorder, its ratio to the normal-state specific heat at T-c increases and slowly converges to the isotropic value. For strong disorder the deviation from the isotropic value is proportional to the elastic electron-scattering time. In the case of a two-band superconductor we apply a simplified model of the interaction independent of the momentum within a band. In the framework of this model all thermodynamic variables can be found explicitly at any value of the scattering rate. This solution explains the sample dependence of the specific-heat discontinuity in MgB2 and the influence of disorder on the critical temperature. | en |
dc.language.iso | en | |
dc.publisher | American Physical Society | |
dc.rights | This work is archived in the Texas A&M Digital Repository with the express permission of the rights holder (commonly but not always the publisher). A copy of the permission document is on file with the Texas A&M University Libraries. | en |
dc.subject | ANISOTROPIC SUPERCONDUCTORS | en |
dc.subject | ORDER-PARAMETER | en |
dc.subject | MGB2 | en |
dc.subject | THERMODYNAMICS | en |
dc.subject | SCATTERING | en |
dc.subject | IMPURITIES | en |
dc.subject | GAP | en |
dc.subject | ALLOYS | en |
dc.subject | MODEL | en |
dc.subject | BAND | en |
dc.subject | Physics | en |
dc.title | Specific-heat discontinuity in impure two-band superconductors | en |
dc.type | Article | en |
local.department | Physics and Astronomy | en |