S. PunpochaR. HoonsawatI. M. TangMahidol University2018-07-242018-07-242004-01-01Solid State Communications. Vol.129, No.3 (2004), 151-156003810982-s2.0-0344925557https://repository.li.mahidol.ac.th/handle/20.500.14594/21284Superconductivity in the MgB2superconductor is described within the framework of a two-band Eliashberg formalism. Different gaps are assumed to open on the different parts of the Fermi surface of this compound. Separation of the order parameter (OP) into two components is achieved by taking the Fourier transform of the OP using the momentum states of the σ- and π-bands of MgB2. Expressions for the Tcand the ratio 2Δσ(0)/kBTcfor this superconductor are obtained. Numerical values for these two properties are obtained for a range of values of the cut-off frequency of the phonons responsible for the superconductivity and for a range of values of the ratio between the two energy gaps. This was done for various values of the normalized partial densities of states on the σ-sheet of the Fermi surface. © 2003 Elsevier Ltd. All rights reserved.Mahidol UniversityChemistryMaterials SciencePhysics and AstronomyArticleSCOPUS10.1016/j.ssc.2003.09.036