Non-Adiabatic Effects in Superconducting Intermetallic Borocarbides |
| A.P. Durajskia, K.M. Skoczylasb, A.E. Auguścika
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 |
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| In this work, we systematically study the non-adiabatic effects on the superconductivity of selected intermetallic borocarbides. Using the strong-coupling Eliashberg theory with and without lowest-order vertex correction we find that for a fixed experimental value of critical temperature the Coulomb pseudopotential can take different values, however, the superconducting order parameter remains practically unaffected. From the physical point of view, it means that in the investigated superconductors the lowest-order vertex correction does not play a significant role. |
DOI:10.12693/APhysPolA.135.276 topics: superconductivity, borocarbides, non-adiabatic effects, vertex corrections |