Effects of external electric and magnetic fields, hydrostatic pressure and temperature on the binding energy of a hydrogenic impurity confined in a two-dimensional quantum dot

Based on the effective-mass approximation, simultaneous effects of external electric and magnetic fields, hydrostatic pressure and temperature on the binding energy of a hydrogenic donor impurity confined in a two-dimensional parabolic quantum dot have been studied, using the direct matrix diagonalization method. The binding energy dependencies upon the external electric field strength and direction, magnetic field, hydrostatic pressure and temperature are reported. The results reveal that the external electric and magnetic fields, hydrostatic pressure and temperature have a great influence on the impurity binding energy. Moreover, an increase in the tilt angle reduces the binding energy, especially at weak confinement regimes.

Electric and magnetic fields, hydrostatic pressure and temperature effects on the binding energy of an impurity in a two-dimensional quantum dot have been studied. Binding energy as a function of the confinement potential and different values of hydrostatic pressure and temperature.Figure optionsDownload as PowerPoint slideHighlights
► Effects of magnetic and tilted electric fields on the binding energy are investigated.
► Hydrostatic pressure and temperature effects on the binding energy are also studied.
► Binding energy strongly depends on the electric and magnetic field strengths.
► Hydrostatic pressure and temperature have a great influence on the binding energy.
► The tilt angle reduces the binding energy, especially at weak confinement regimes.