Low-temperature specific heat of superconducting MgB2

Citation
Jl. Luo et al., Low-temperature specific heat of superconducting MgB2, CHIN PHYS L, 18(6), 2001, pp. 820-822
Citations number
10
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
CHINESE PHYSICS LETTERS
ISSN journal
0256-307X → ACNP
Volume
18
Issue
6
Year of publication
2001
Pages
820 - 822
Database
ISI
SICI code
0256-307X(200106)18:6<820:LSHOSM>2.0.ZU;2-1
Abstract
The specific heat of the recently discovered superconductor MgB2 has been m easured at temperatures ranging from 4.5 to 80 K. The superconducting anoma ly DeltaC at T-c is clearly observed. The total specific heat in the normal state can be well fitted by electronic and phonon contributions. The Debye temperature theta (D) is found to be 737 K, much larger than other interme tallic superconductors. The normal-state electronic specific heat coefficie nt gamma is found to be 2.48 +/- 0.5 mJ/mol (.) K-2 and DeltaC/gammaT(c) is between 1.41 and 2.15.