Two- gap Superconductivity and Electronic Specific Heat in Binary Intermetallic Compound MgB2 based with Intra-and Interband interactions

Volume 19 No 3 (2021)

Pradeep Chaudhary,Anuj Nuwal,S. C. Tiwari

DOI: 10.14704/nq.2021.19.3.NQ21033

Abstract

Magnesium diboride   MgB2 with TC  39K is a record breaking two gap superconducting compound among the s-p metals and alloys. Considering a multiband model Hamiltonian with intra- & inter band pair transfer interactions and following Green’s function technique and equation of motion method, we have shown that MgB2 possess two gaps and study of electronic specific heat. The agreement between theoretical results obtained and experimental results is quite convincing.

Keywords

Green’s function, Superconducting order parameter, Electronic specific heat

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