Wednesday 27 September 2023

Specific Heat and Density of MgB2 Superconductor in Two Band Models: A Theoretical Study | Chapter 4 | Current Perspective to Physical Science Research Vol. 1

 The aim of this work search out compare the results of hypothesis qualitatively with the existent data from experiments while trying the fundamental properties of MgB2 superconductive properties, to a degree specific heat, mass of states, and temperature. MgB2 accompanying T c ≈ 40K, is a record-breaking compound among the s-p metals and alloys. This essence seems expected a unique exemplification of dual band energetic frameworks that are only easily coupled to one another. The superconductivity in this place simple compound is mainly due to the boron substitute-lattice broadcast band, as demonstrated by exploratory evidence. There are two superconductivity gaps, in accordance with investigations like tunneling spectroscopy, heat required to raise temperature measurements, and extreme resolution spectroscopy. Considering a recognized two band BCS Hamiltonian containing a Fermi Surface of 𝝅- and σ- bands and following Green's function technique and equating of motion method, we have proved that MgB2 possess two superconducting break. The system permits a precursor ending for Cooper pair droplets, that transitions into a secured state at a threshold hotness below the mean field resolution, it is also noted. Additionally, a study of heat required to raise temperature and state densities is offered. For particular heat, the regularity between belief and experimental judgments is quite persuasive. Introduction, Model Hamiltonian, Physical Properties, Numerical Calculations, Discussion, and Conclusions are the five components that compensate the study.

Author(s) Details:

Anuj Nuwal,
Department of Physics, Swami Vivekanand Govt. Model School Mandal, Bhilwara-311402, Rajasthan, India.

Pradeep Chaudhary,
Department of Physics, Govt. Polytechnic College, Chittorgarh-312001, Rajasthan, India.

S. C. Tiwari,
Department of Physics, M.L.V. Govt. College, Bhilwara-311001, Rajasthan, India.

Please see the link here: https://stm.bookpi.org/CPPSR-V1/article/view/11918

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