Rashba effect in an asymmetric quantum dot in a magnetic field

2002 ◽  
Vol 32 (4-6) ◽  
pp. 171-177 ◽  
Author(s):  
S. Bandyopadhyay ◽  
M. Cahay
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Rashba Effect ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum

EFFECTIVE MASS OF STRONG-COUPLED BOUND POLARON IN AN ASYMMETRIC QUANTUM DOT INDUCED WITH RASHBA EFFECT

2011 ◽  
Vol 10 (03) ◽  
pp. 501-505 ◽  
Author(s):  
ZHIXIN LI ◽  
JUAN XIAO ◽  
AIYONG LIU ◽  
JINGLIN XIAO
Keyword(s):  
Quantum Dot ◽  
Effective Mass ◽  
Operator Method ◽  
Transformation Method ◽  
Rashba Effect ◽  
Linear Combination Operator ◽  
Polaron Model ◽  
Bound Polaron ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum

In this paper, on the basis of Huybrechs' strong-coupled polaron model, the Tokuda-modified linear-combination operator method and the unitary transformation method are used to study the properties of the strong-coupled bound polaron considering the influence of Rashba effect, which is brought by the spin-orbit (SO) interaction, in an asymmetric quantum dot (QD). The expression for the effective mass of the polaron as functions of the transverse and longitudinal bound strengths, velocity, vibration frequency, and the bound potential has been derived. After a simple numerical calculation on the RbCl crystal, we found that the total effective mass of the bound polaron is composed of three parts. The interaction between the orbit and the spin with different directions has different effects on the effective mass of the bound polaron.

Laser light and external magnetic field control of polaron in asymmetric quantum dot

2019 ◽  
Vol 129 ◽  
pp. 77-90 ◽  
Author(s):  
M.F.C. Fobasso ◽  
A.J. Fotue ◽  
S.C. Kenfack ◽  
C.M. Ekengue ◽  
C.D.G. Ngoufack ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quantum Dot ◽  
Laser Light ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum ◽  
Field Control

THE EFFECTIVE MASS OF STRONG-COUPLED POLARON IN AN ASYMMETRIC QUANTUM DOT INDUCED WITH RASHBA EFFECT

2010 ◽  
Vol 24 (23) ◽  
pp. 2423-2430 ◽  
Author(s):  
ZHI-XIN LI ◽  
JING-LIN XIAO ◽  
HONG-YAN WANG
Keyword(s):  
Quantum Dot ◽  
Effective Mass ◽  
Unitary Transformation ◽  
Spin Orbit ◽  
Rashba Effect ◽  
Linear Combination Operator ◽  
Polaron Model ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum ◽  
Transformation Methods

In this paper, on the basis of Huybrechs' strong-coupled polaron model, Tokuda modified linear-combination operator and the unitary transformation methods are used to study the properties of the strong-coupled polaron considering the influence of Rashba effect, which is brought by the spin-orbit (SO) interaction, in the asymmetric quantum dot (QD). The expressions of the effective mass as a function of the transverse and longitudinal confinement strengths, the velocity and the vibration frequency were derived. Numerical calculation on the RbCl QD, as an example, is performed and the results show that the total effective mass of the polaron is composed of three parts. The interaction between the orbit and the spin with different directions has different effects on the effective mass of the polaron.

scholarly journals Polaron Rashba effect in an asymmetric quantum dot

2014 ◽  
Vol 40 (6) ◽  
pp. 552-555 ◽  
Author(s):  
Shu-Ping Shan ◽  
Shi-Hua Chen ◽  
Jing-Lin Xiao
Keyword(s):  
Quantum Dot ◽  
Rashba Effect ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum

EFFECTS OF SPIN ON THE GROUND-STATE ENERGY OF STRONG-COUPLED BOUND MAGNETOPOLARON IN AN ASYMMETRIC QUANTUM DOT

2012 ◽  
Vol 26 (30) ◽  
pp. 1250185 ◽  
Author(s):  
ZHI-XIN LI ◽  
JING-LIN XIAO
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Coupled Model ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum ◽  
The Magnetic Field ◽  
Bound Magnetopolaron

The properties of a strong-coupled bound magnetopolaron in an asymmetric quantum dot (QD) have been investigated by using the Tokuda modified linear combination operator and the unitary transformation methods on the basis of the Huybrechts' strong-coupled model. We derive the expressions of the ground-state energy as function of the transverse and longitudinal confinement lengths, the magnetic field. Numerical calculation is performed and the results show that the ground-state energy of the bound magnetopolaron splits into two branches, taking into account the spin influences. And the ground-state energy decreases with increasing the transverse and longitudinal confinement lengths and increases with the rising of the magnetic field.

Influence of magnetic field on the properties of polaron in an asymmetric quantum dot

2019 ◽  
Vol 33 (23) ◽  
pp. 1950263
Author(s):  
Shu-Ping Shan ◽  
Shi-Hua Chen ◽  
Ren-Zhong Zhuang ◽  
Chun Hu
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Ground State Energy ◽  
Ground State ◽  
State Energy ◽  
Variation Method ◽  
Asymmetric Quantum Dot ◽  
Asymmetric Quantum ◽  
Inversion Asymmetry ◽  
The Magnetic Field

Influence of the magnetic field on the properties of the polaron in an asymmetric quantum dot is studied by using the Pekar variation method. The expression of the magnetopolaron ground-state energy is obtained by theoretical derivation. The relationship between the ground-state energy of the magnetopolaron with the transverse confinement strength, the longitudinal confinement strength and the magnetic field cyclotron resonance frequency are further discussed by us. Due to the crystal structure inversion asymmetry and the time inversion asymmetry, the polaron energy causes Rashba spin–orbit splitting and Zeeman splitting. Under the strong and weak magnetic fields, we discuss the dominant position of Rashba effect and Zeeman effect, respectively. Due to the presence of phonons, the polaron is more stable than the bare electron state, and the energy splitting is more stable.

Sign in / Sign up

Export Citation Format

Share Document