Effect of electron-phonon interaction on the hydrogenic impurity binding energy in a quantum well

1988 ◽  
Vol 40-41 ◽  
pp. 735-736
Author(s):  
Mengyan Shen ◽  
Shiwei Gu
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Phonon Interaction ◽  
Hydrogenic Impurity ◽  
Electron Phonon Interaction

BINDING ENERGY OF A BOUND POLARON IN THE FINITE PARABOLIC QUANTUM WELL

2001 ◽  
Vol 15 (20) ◽  
pp. 827-835 ◽  
Author(s):  
FENG-QI ZHAO ◽  
XI XIA LIANG
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Transition Energy ◽  
Energy Levels ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Bound Polaron

We have studied the effect of the electron–phonon interaction on the energy levels of the bound polaron and calculated the ground-state energy, the binding energy of the ground state, and the 1 s → 2 p ± transition energy in the GaAs/Al x Ga 1-x As parabolic quantum well (PQW) structure by using a modified Lee–Low–Pines (LLP) variational method. The numerical results are given and discussed. It is found that the contribution of electron–phonon interaction to the ground-state energy and the binding energy is obvious, especially in large well-width PQWs. The electron–phonon interaction should not be neglected.

The effect of electron-phonon interaction on the impurity binding energy in a quantum well

1999 ◽  
Vol 11 (42) ◽  
pp. 8185-8196 ◽  
Author(s):  
Yueh-Nan Chen ◽  
Der-San Chuu ◽  
Yuh-Kae Lin
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

Hydrogenic impurity bound polaron in an anisotropic quantum dot

2018 ◽  
Vol 32 (02) ◽  
pp. 1850006
Author(s):  
Shi-Hua Chen
Keyword(s):  
Binding Energy ◽  
Quantum Dot ◽  
Three Dimensional ◽  
Binding Energies ◽  
Total Binding Energy ◽  
Phonon Interaction ◽  
Hydrogenic Impurity ◽  
Electron Phonon Interaction ◽  
Dependent Relationship ◽  
Anisotropic Quantum Dot

The effect of the electron–phonon interaction on an electron bound to a hydrogenic impurity in a three-dimensional (3D) anisotropic quantum dot (QD) is studied theoretically. We use the Landau–Pekar variational approach to calculate the binding energy of ground state (GS) and first-excited state (ES) with considering electron–phonon interaction. The expressions of the GS and ES energies under investigation depict a rich variety of dependent relationship with the variational parameters in three different limiting cases. Numerical calculations were performed for ZnSe QDs with different confinement lengths in the xy-plane and the z-direction, respectively. It is illustrated that binding energies of impurity polarons corresponding to each level are larger in small QDs. Furthermore, the contribution to binding energy from phonon is about 15% of the total binding energy.

Effects of electron-phonon interaction on exciton binding energy in a quantum well

1995 ◽  
Vol 215 (4) ◽  
pp. 397-403
Author(s):  
Der-San Chuu ◽  
Win-Long Won ◽  
Jui-Hsiang Pei
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Exciton Binding Energy ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

Electron-phonon interaction and electron mobility in quantum-well type-II PbTe/PbS structures

1998 ◽  
Vol 32 (6) ◽  
pp. 665-667
Author(s):  
V. V. Bondarenko ◽  
V. V. Zabudskii ◽  
F. F. Sizov
Keyword(s):  
Quantum Well ◽  
Electron Mobility ◽  
Type Ii ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

Electron-phonon interaction in a very low mobilityGaAs/Ga1−xAlxAsδ-doped gated quantum well

2000 ◽  
Vol 61 (3) ◽  
pp. 2028-2033 ◽  
Author(s):  
R. Fletcher ◽  
Y. Feng ◽  
C. T. Foxon ◽  
J. J. Harris
Keyword(s):  
Quantum Well ◽  
Phonon Interaction ◽  
Electron Phonon Interaction

The effect of hydrostatic pressure on binding energy and polaron effect of bound polaron in wurtzite AlyGa1−yN/AlxGa1−xN parabolic quantum well

2020 ◽  
pp. 2150008
Author(s):  
Feng Qi Zhao ◽  
Zi Zheng Guo ◽  
Bo Zhao
Keyword(s):  
Hydrostatic Pressure ◽  
Binding Energy ◽  
Quantum Well ◽  
Optical Phonon ◽  
Ground State ◽  
Phonon Interaction ◽  
Polaron Effect ◽  
Bound Polaron ◽  
Composition Formula ◽  
Effect Of Hydrostatic Pressure

The effect of hydrostatic pressure on binding energy and polaron effect of the bound polaron in a wurtzite Al[Formula: see text]Ga[Formula: see text]N/Al[Formula: see text]Ga[Formula: see text]N parabolic quantum well (QW) is studied using the Lee–Low–Pines intermediate coupling variational method in the paper. The numerical relationship of binding energy and polaron effect of the bound polaron are given as a functions of pressure [Formula: see text], composition [Formula: see text] and well width [Formula: see text]. In the theoretical calculations, the anisotropy of the electron effective band mass, the optical phonon frequency, the dielectric constant and other parameters in the system varying with the pressure [Formula: see text] and the coordinate [Formula: see text] are included. The electron–optical phonon interaction and the impurity center–optical phonon interaction are considered. The results show that hydrostatic pressure has a very obvious effect on binding energy and polaron effect of the bound polaron in the wurtzite Al[Formula: see text]Ga[Formula: see text]N/Al[Formula: see text]Ga[Formula: see text]N parabolic QW. For QWs with determined structural parameters, the contributions of the three branch of phonons, i.e., the confined (CF) phonon, half-space (HS) phonon and the interface (IF) phonon, to binding energy of the polaron increase with the increase of the pressure [Formula: see text], the CF phonons contribute the most. Under the condition of a certain well width and hydrostatic pressure, with the increase of the composition [Formula: see text], the ground state binding energy of the bound polaron in the wurtzite Al[Formula: see text]Ga[Formula: see text]N/Al[Formula: see text]Ga[Formula: see text]N parabolic QW increases, and the contribution of the IF phonon and HS phonons to the binding energy decreases, while the contribution of the CF phonons and the total contribution of all phonons increase significantly. In the wurtzite Al[Formula: see text]Ga[Formula: see text]N/Al[Formula: see text]Ga[Formula: see text]N parabolic QW, the ground state binding energy of the bound polaron decreases with the increase of the well width. The decrease rate is greater in the narrow well, and smaller in the wide well. The contribution of different branches of phonons to binding energy varies with the change of the well width. With the increase of the well width, the contribution of CF phonons to binding energy increases, the contribution of HS phonons to binding energy decreases, and the IF phonon contribution and the total phonon contribution first increase to the maximum value and then gradually decrease slightly. The changing trend of binding energy of bound polaron in the wurtzite Al[Formula: see text]Ga[Formula: see text]N/Al[Formula: see text]Ga[Formula: see text]N parabolic QW, of the contribution of different branch phonons to binding energy with the pressure [Formula: see text], composition [Formula: see text] and well width [Formula: see text] is similar to that of the GaN/Al[Formula: see text]Ga[Formula: see text]N square QW, but the change in the parabolic QW is more obvious.

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