Eigen-solutions and thermal properties of multi-parameter exponential potential

• Published in: Heliyon 2022-09, Vol.8 (9), p.e10343-e10343, Article e10343
• Main Authors: Onate, C.A., Okon, I.B., Onyeaju, M.C., Omugbe, E., Antia, A.D., Araujo, J.P., Wen-Li, Chen
• Format: Article
• Language: English
• Subjects: Eigen-solutions; Potential model; Schrödinger equation; Supersymmetric quantum mechanics approach; Thermodynamic properties
• ISSN: 2405-8440; 2405-8440
• DOI: 10.1016/j.heliyon.2022.e10343

In this work, we determined an approximate eigen solutions of Modified multi-parameter exponential potential using supersymmetric quantum mechanics approach (SUSY) with improved Greene-Aldrich approximation to the centrifugal term. The energy equation and its corresponding normalised radial wave function were fully obtained. The proposed potential reduces to other useful potentials like Rosen-Morse, Hellmann, Yukawa and Coulomb potential as special cases. The thermodynamic properties like the vibrational mean energy (Uβ,V), Vibrational heat capacity (Cβ,V), vibrational entropy (Sβ,V) and vibrational free energy (Fβ,V) of the interacting potential were studied via partition function (Zβ,V) obtained from the resulting energy equation. This study was applied to three diatomic molecules: Chromium hydride (CrH), Titanium Hydride (TiH) and Thiocynate (ScN). To ascertain the high degree of our analytical mathematical accuracy, we compared the results of special cases with an existing results. These were found to be in excellent agreement with the existing results. Potential model; Eigen-solutions; Thermodynamic properties; Schrödinger equation; Supersymmetric quantum mechanics approach.