Published December 1, 2004 | Version v1
Journal article Metadata-only

A generalized two-band model for the superconductivity in MgB2

Creators

  • 1. Institute of Physics, University of Tartu, Riia 142, 51014 Tartu (Estonia)

Description

The free energy of a two-band superconductor is obtained by taking into account all actual electron-phonon and Coulomb interactions. The temperature dependences of the superconducting gaps, the specific heat with its jump at T = Tc (Tc is the critical temperature) are calculated by minimizing the free energy. The theory is applied to the MgB2 superconductor. The Tc isotope effect is estimated and the accordance with the experiment is obtained

Availability note (English)

Available online at http://stacks.iop.org/0953-2048/17/1472/sust4_12_019.pdf or at the Web site for the journal Superconductor Science and Technology (ISSN 1361-6668) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-2048/17/1472/sust4_12_019.pdf; http://www.iop.org/;
DOI
10.1088/0953-2048/17/12/019;
PII
S0953-2048(04)81011-X;

Publishing Information

Journal Title
Superconductor Science and Technology
Journal Volume
17
Journal Issue
12
Journal Page Range
p. 1472-1476
ISSN
0953-2048
CODEN
SUSTEF

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36039637
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
Descriptors DEI
ELECTRONS; FREE ENERGY; ISOTOPE EFFECTS; MAGNESIUM BORIDES; PHONONS; SPECIFIC HEAT; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TEMPERATURE DEPENDENCE; TRANSITION TEMPERATURE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BORIDES; BORON COMPOUNDS; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; ELEMENTARY PARTICLES; ENERGY; FERMIONS; LEPTONS; MAGNESIUM COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; THERMODYNAMIC PROPERTIES