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Quantum pseudodots under the influence of external vector and scalar fields
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作者 m eshghi S m Ikhdairt 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第8期109-117,共9页
We study the spherical quantum pseudodots in the Schr6dinger equation by using the pseudo-harmonic plus harmonic oscillator potentials considering the effect of the external electric and magnetic fields. The finite en... We study the spherical quantum pseudodots in the Schr6dinger equation by using the pseudo-harmonic plus harmonic oscillator potentials considering the effect of the external electric and magnetic fields. The finite energy levels and the wave functions are calculated. Furthermore, the behavior of the essential thermodynamic quantities such as, the free energy, the mean energy, the entropy, the specific heat, the magnetization, the magnetic susceptibility, and the persistent currents are also studied by using the characteristic function. Our analytical results are found to be in good agreement with the other works. The numerical results on the energy levels as well as the thermodynamic quantities have also been given. 展开更多
关键词 Schr6dinger equation harmonic oscillator pseudo-harmonic potential thermodynamic quantities quantum pseudo-dots characteristic function
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Approximate energies and thermal properties of a position-dependent mass charged particle under external magnetic fields
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作者 m eshghi H mehraban S m Ikhdair 《Chinese Physics B》 SCIE EI CAS CSCD 2017年第6期22-30,共9页
We solve the Schrodinger 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 Aharo... We solve the Schrodinger 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. 展开更多
关键词 Schr?dinger equation Morse-plus-Coulomb potentials position-dependent mass distribution functions perpendicular magnetic and Aharonov–Bohm flux fields
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Energy states of the Hulthen plus Coulomb-like potential with position-dependent mass function in external magnetic fields
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作者 m eshghi R Sever S m Ikhdair 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第2期234-238,共5页
We need to solve a suitable exponential form of the position-dependent mass (PDM) Schr6dinger equation with a charged particle placed in the Hulthen plus Coulomb-like potential field and under the actions of the ext... We need to solve a suitable exponential form of the position-dependent mass (PDM) Schr6dinger equation with a charged particle placed in the Hulthen plus Coulomb-like potential field and under the actions of the external magnetic and Aharonov-Bohm (AB) flux fields. The bound state energies and their corresponding wave functions are calculated for the spatially-dependent mass distribution function of interest in physics. A few plots of some numerical results with respect to the energy are shown. 展开更多
关键词 Schr6dinger equation Hulthen plus Coulomb-like potential position-dependent mass distributionfunctions perpendicular magnetic and Aharonov-Bohm flux fields
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