Effect of electric and magnetic fields on the binding energy of a Coulomb impurity bound polaron in a cylindrical quantum dot

2008 ◽  
Vol 245 (1) ◽  
pp. 123-131 ◽  
Author(s):  
Arshak L. Vartanian ◽  
Lyudvig A. Vardanyan ◽  
Eduard M. Kazaryan
Keyword(s):  
Binding Energy ◽  
Magnetic Fields ◽  
Quantum Dot ◽  
Bound Polaron ◽  
Electric And Magnetic Fields

INFLUENCE OF BOTH ELECTRIC AND MAGNETIC FIELDS ON THE BOUND POLARON IN AN ANISOTROPIC QUANTUM DOT

2008 ◽  
Vol 22 (16) ◽  
pp. 2611-2616 ◽  
Author(s):  
SHI-HUA CHEN ◽  
JING-LIN XIAO
Keyword(s):  
Binding Energy ◽  
Magnetic Fields ◽  
Quantum Dot ◽  
Field Strength ◽  
Longitudinal Direction ◽  
Phonon Interaction ◽  
Bound Polaron ◽  
Electric And Magnetic Fields ◽  
Anisotropic Quantum Dot ◽  
The Magnetic Field

The binding energy of a bound polaron in an anisotropic quantum dot (QD) subject to electric and magnetic fields along the growth axis has been investigated by using a variational method of Pekar type, taking into account the electron-bulk LO-phonon interaction. The results show that the binding energy decreases with increasing electric field strength and increases with increasing confinement strengths in the lateral and the longitudinal direction, the magnetic field strength, and the Coulomb potential.

PHONON CONFINEMENT EFFECT ON THE BINDING ENERGY OF A HYDROGENIC IMPURITY IN QUANTUM WIRES IN THE ELECTRIC AND MAGNETIC FIELDS

2012 ◽  
Vol 15 ◽  
pp. 184-190
Author(s):  
ABBAS SHAHBANDARI
Keyword(s):  
Binding Energy ◽  
Magnetic Fields ◽  
Quantum Wires ◽  
Polar Optical Phonon ◽  
Phonon Confinement ◽  
Hydrogenic Impurity ◽  
Bound Polaron ◽  
Electric And Magnetic Fields ◽  
Applied Fields ◽  
Variation Technique

The effect of phonon confinement on ground state binding energy of bound polaron in polar quantum wires with a finite confining potential investigated by Landau-Pekar variation technique. The effect of external electric and magnetic fields is taken into account as well. The obtained results show that the polar optical phonon confinement leads to a considerable enhancement of the polaron effect and these corrections increase with increasing of applied fields.

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