Theoretical Study of Density of States of Magnesium Diboride Superconductor based on Multi Band Model

1 Research scholar 3 Dean (Basic science) 1,2,3 Department of Physics 1,3 Mewar University Gangrar, Chittorgarh, Rajasthan, India 2 M.L.V. Govt. College Bhilwara Rajasthan, India Abstract— Magnesium diboride with Tc = 39K is a record breaking compound among s-p metals & alloys. Many experiments performed on Magnesium diboride suggest that there are two superconducting gaps. Considering a multiband model Hamiltonian with intra& inter band pair transfer interactions we have derived the normal and anomalous one-particle Green’s function & self-consistent equations for superconducting order parameter(Δ) using Green’s function technique & equation of motion method, we have studied the density of states. The results are quite encouraging.