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Chin. Phys. B, 2017, Vol. 26(6): 060302    DOI: 10.1088/1674-1056/26/6/060302
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Approximate energies and thermal properties of a position-dependent mass charged particle under external magnetic fields

M Eshghi1, H Mehraban2, S M Ikhdair3,4
1 Young Researchers and Elite Club, Central Tehran Branch, Islamic Azad University, Tehran, Iran;
2 Faculty of Physics, Semnan University, Semnan, Iran;
3 Department of Physics, Faculty of Science, An-Najah National University, Nablus, West Bank, Palestine;
4 Department of Electrical Engineering, Near East University, Nicosia, Northern Cyprus, Mersin 10, Turkey
Abstract  

We solve the Schrödinger equation with a position-dependent mass (PDM) charged particle interacted via the superposition of the Morse-plus-Coulomb potentials and is under the influence of external magnetic and Aharonov-Bohm (AB) flux fields. The nonrelativistic bound state energies together with their wave functions are calculated for two spatially-dependent mass distribution functions. We also study the thermal quantities of such a system. Further, the canonical formalism is used to compute various thermodynamic variables for second choosing mass by using the Gibbs formalism. We give plots for energy states as a function of various physical parameters. The behavior of the internal energy, specific heat, and entropy as functions of temperature and mass density parameter in the inverse-square mass case for different values of magnetic field are shown.

Keywords:  Schrödinger equation      Morse-plus-Coulomb potentials      position-dependent mass distribution functions      perpendicular magnetic and Aharonov-Bohm flux fields  
Received:  02 January 2017      Revised:  26 February 2017      Published:  05 June 2017
PACS:  03.65.Ge (Solutions of wave equations: bound states)  
  03.65.Ca (Formalism)  
  03.65.Db (Functional analytical methods)  
Corresponding Authors:  M Eshghi     E-mail:  eshgi54@gmail.com,m.eshghi@semnan.ac.ir

Cite this article: 

M Eshghi, H Mehraban, S M Ikhdair Approximate energies and thermal properties of a position-dependent mass charged particle under external magnetic fields 2017 Chin. Phys. B 26 060302

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