Magnetic-field effect on the diamagnetic susceptibility of hydrogenic impurities in quantum well-wires

KÖKSAL M., KILIÇARSLAN E., SARİ H., SÖKMEN İ.

Physica B: Condensed Matter, vol.404, no.21, pp.3850-3854, 2009 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 404 Issue: 21
  • Publication Date: 2009
  • Doi Number: 10.1016/j.physb.2009.07.103
  • Journal Name: Physica B: Condensed Matter
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3850-3854
  • Keywords: Diamagnetic susceptibility, Impurity, Magnetic field, Quantum well-wire
  • Uşak University Affiliated: Yes

Abstract

We have studied the magnetic field effects on the diamagnetic susceptibility and binding energy of a hydrogenic impurity in a quantum well-wire by taking into account spatially dependent screening. Using the effective-mass approximation within a variational scheme, binding energy and diamagnetic susceptibility of donor are obtained as a function of the magnetic field, length of the square quantum well-wire for different impurity positions. It is shown that the magnetic field effects on diamagnetic susceptibility can be more important for donors in quantum well-wires over a large range of wire dimensions. © 2009 Elsevier B.V. All rights reserved.