Specific heat of MgB2 in a one- and a two-band model from first-principles calculations
Publication type: Journal Article
Publication date: 2002-01-31
scimago Q2
wos Q3
SJR: 0.624
CiteScore: 4.6
Impact factor: 2.6
ISSN: 09538984, 1361648X
Condensed Matter Physics
General Materials Science
Abstract
The heat capacity anomaly at the transition to superconductivity of the layered superconductor MgB$_2$ is compared to first-principles calculations with the Coulomb repulsion, $\mu^\ast$, as the only parameter which is fixed to give the measured $T_c$. We solve the Eliashberg equations for both an isotropic one-band and a two-band model with different superconducting gaps on the $\pi$ and $\sigma$ Fermi surfaces. The agreement with experiments is considerably better for the two-band model than for the one-band model.
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242
Total citations:
242
Citations from 2025:
6
(2.48%)
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Golubov A. A. et al. Specific heat of MgB2 in a one- and a two-band model from first-principles calculations // Journal of Physics Condensed Matter. 2002. Vol. 14. No. 6. pp. 1353-1360.
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Golubov A. A., Kortus J., DOLGOV O. V., JEPSEN O., Kong Y., Andersen O., Gibson B. J., Ahn K., Kremer R. Specific heat of MgB2 in a one- and a two-band model from first-principles calculations // Journal of Physics Condensed Matter. 2002. Vol. 14. No. 6. pp. 1353-1360.
Cite this
RIS
Copy
TY - JOUR
DO - 10.1088/0953-8984/14/6/320
UR - https://doi.org/10.1088/0953-8984/14/6/320
TI - Specific heat of MgB2 in a one- and a two-band model from first-principles calculations
T2 - Journal of Physics Condensed Matter
AU - Golubov, Alexander A.
AU - Kortus, Jens
AU - DOLGOV, O. V.
AU - JEPSEN, O.
AU - Kong, Y.
AU - Andersen, O
AU - Gibson, B. J.
AU - Ahn, K.
AU - Kremer, R.K.
PY - 2002
DA - 2002/01/31
PB - IOP Publishing
SP - 1353-1360
IS - 6
VL - 14
SN - 0953-8984
SN - 1361-648X
ER -
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@article{2002_Golubov,
author = {Alexander A. Golubov and Jens Kortus and O. V. DOLGOV and O. JEPSEN and Y. Kong and O Andersen and B. J. Gibson and K. Ahn and R.K. Kremer},
title = {Specific heat of MgB2 in a one- and a two-band model from first-principles calculations},
journal = {Journal of Physics Condensed Matter},
year = {2002},
volume = {14},
publisher = {IOP Publishing},
month = {jan},
url = {https://doi.org/10.1088/0953-8984/14/6/320},
number = {6},
pages = {1353--1360},
doi = {10.1088/0953-8984/14/6/320}
}
Cite this
MLA
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Golubov, Alexander A., et al. “Specific heat of MgB2 in a one- and a two-band model from first-principles calculations.” Journal of Physics Condensed Matter, vol. 14, no. 6, Jan. 2002, pp. 1353-1360. https://doi.org/10.1088/0953-8984/14/6/320.
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