Diamagnetic Susceptibility of a Confined Donor in a Quantum Dot with Different Confinements

Authors

  • A. J. Peter Professor of Physics
  • J. Ebenezar Jamal Mohamed College, Trich,TN.,India

DOI:

https://doi.org/10.3329/jsr.v1i2.1184

Keywords:

Quantum dot, Quantum well wire, Quantum well, Diamagnetic susceptibility, Donor impurity

Abstract

The binding energies of shallow hydrogenic impurity in a GaAs/GaAlAs quantum dot with spherical confinement, harmonic oscillator-like and rectangular well-like potentials are calculated as a function of dot radius using a variational procedure within the effective mass approximation. The calculations of the binding energy of the donor impurity as a function of the system geometry have been investigated. A comparison of the eigenstates of a hydrogenic impurity in all the confinements of dots is discussed in detail.  We have computed and compared the susceptibility for a hydrogenic donor in a spherical confinement, harmonic oscillator-like and rectangular well-like potentials for a finite QD and observe a strong influence of the shape of confining potential and geometry of the dot on the susceptibility.

 

Keywords: Quantum dot; Quantum well wire; Quantum well; Diamagnetic susceptibility; Donor impurity.

 

© 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights

reserved.

 

DOI: 10.3329/jsr.v1i2.1184

 

 

 

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Author Biographies

A. J. Peter, Professor of Physics

After completing his Ph.D., on NanoPhysics, went to Zhejiang Univeristy, China for his post doctoral studies and visited ICTP, Trieste, Itlay in 2007, published more than 50 international research papers.

J. Ebenezar, Jamal Mohamed College, Trich,TN.,India

He  completed his Ph.D., on BioPhysics and currently working in Jamal Mohamed College, Trich,TN.,India

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Published

2009-04-21

How to Cite

Peter, A. J., & Ebenezar, J. (2009). Diamagnetic Susceptibility of a Confined Donor in a Quantum Dot with Different Confinements. Journal of Scientific Research, 1(2), 200–208. https://doi.org/10.3329/jsr.v1i2.1184

Issue

Section

Section A: Physical and Mathematical Sciences