Properties of the Superconducting State in Hexagonal BaSn5

M.W. Jarosika, A.D. Woźniaka, M. Kostrzewab, K.P. Kosk-Joniecb, M. Adamczyka aInstitute of Physics, Częstochowa University of Technology, al. Armii Krajowej 19, 42-200 Częstochowa, Poland bInstitute of Physics, Jan Długosz University in Częstochowa, al. Armii Krajowej 13/15, 42-200 Częstochowa, Poland

Full Text PDF

The thermodynamic properties of the superconducting state in hexagonal BaSn5 superconductor have been investigated. It has been shown that: (i) the critical value of the Coulomb pseudopotential is equal to 0.152; (ii) the dimensionless ratios: 2Δp≤ft(0)/kBTC, ΔC≤ft(TC)/CN≤ft(TC) and TCCN≤ft(TC)/H2C≤ft(0) are equal to: 3.88, 1.78, and 0.151, respectively; (iii) the ratio of the effective to bare electron mass reaches maximum of 1.96 for T=TC.

DOI:10.12693/APhysPolA.135.280 PACS numbers: 74.20.Fg, 74.25.Bt, 74.25.Ha