Theoretical analysis of two-gap superconductivity of magnesium diborades and iron pnictides in the generalized {alpha} model

A generalized {alpha} model for computing the superconducting parameters of real two-band superconductors is proposed based on an analysis of the properties of two-band equations in the theory of superconductivity. Using this model, we calculate the heat capacity and optical properties of Ba(Fe{sub...

Full description

Saved in:
Bibliographic Details
Published inJournal of experimental and theoretical physics Vol. 115; no. 2
Main Authors Maksimov, E. G., Karakozov, A. E., Gorshunov, B. P., Ponomarev, Ya. G., Zhukova, E. S., Dressel, M.
Format Journal Article
LanguageEnglish
Published United States 15.08.2012
Subjects
ALUMINIUM BORIDES
BARIUM COMPOUNDS
COBALT ARSENIDES
COMPARATIVE EVALUATIONS
CONCENTRATION RATIO
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ENERGY GAP
IRON ARSENIDES
MAGNESIUM BORIDES
OPTICAL PROPERTIES
SPECIFIC HEAT
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
Online AccessGet full text

Cover

More Information
Summary:A generalized {alpha} model for computing the superconducting parameters of real two-band superconductors is proposed based on an analysis of the properties of two-band equations in the theory of superconductivity. Using this model, we calculate the heat capacity and optical properties of Ba(Fe{sub 1-x}Co{sub x}){sub 2}As{sub 2} superconducting compound and obtain the temperature dependences of the gaps and energies of the Leggett modes in the Mg{sub 1-x}Al{sub x}B{sub 2} superconducting system. Good quantitative coincidence of the calculated data and experimental results is demonstrated.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776112060088