Effect of electron–phonon interaction on the electronic properties of an axially symmetric polar semiconductor quantum wire with transverse parabolic confinement

2005 ◽  
Vol 358 (1-4) ◽  
pp. 191-200 ◽  
Author(s):  
R. Phani Murali Krishna ◽  
Ashok Chatterjee
Keyword(s):  
Electronic Properties ◽  
Quantum Wire ◽  
Axially Symmetric ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Parabolic Confinement

EFFECTS OF CONFINED LO AND SO PHONON MODES ON POLARON IN FREESTANDING CYLINDRICAL QUANTUM WIRE WITH PARABOLIC CONFINEMENT

2009 ◽  
Vol 23 (29) ◽  
pp. 3515-3523 ◽  
Author(s):  
ANYUN ZOU ◽  
HONGJING XIE
Keyword(s):  
Effective Mass ◽  
Quantum Wire ◽  
Longitudinal Optical ◽  
Perturbation Approach ◽  
Wire Radius ◽  
Phonon Modes ◽  
Phonon Interaction ◽  
Electron Effective Mass ◽  
Self Energy ◽  
Parabolic Confinement

The electron self-energy and correction to the electron effective mass in a freestanding quantum wire with parabolic confining potential was investigated by the perturbation approach. Both the electron-confined longitudinal optical (LO) phonon and surface optical (SO) phonon interactions were considered. Results shows that, for small wire radius, the contributions of electron–LO phonon interaction to the electron self-energy and the correction to the electron effective mass are relatively small in compare with those of the electron–SO phonon interaction.

Electron–phonon interaction influence on optical properties of parallelogram quantum wires

2014 ◽  
Vol 28 (22) ◽  
pp. 1450142 ◽  
Author(s):  
H. Bahramiyan ◽  
R. Khordad ◽  
H. Azari
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Quantum Wire ◽  
Quantum Wires ◽  
Energy Levels ◽  
Moment Matrix ◽  
Absorption Coefficients ◽  
Phonon Interaction ◽  
Electron Phonon Interaction ◽  
Index Changes

In the present work, we have studied the effect of electron–phonon (e–p) interaction on optical properties of a GaAs quantum wire with parallelogram cross-section. For this goal, we have calculated refractive index changes and absorption coefficients by using compact-density-matrix approach and iterative method. The results show that the refractive index changes and absorption coefficients are obviously increased and the peak positions shift toward higher energies after considering the e–p interaction. We have also studied polaronic effect on electric dipole moment matrix elements and the energy levels for different quantum wire sizes. We have found that the line-width of absorption coefficients and refractive index changes is approximately constant after considering e–p interaction.

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