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


Koksal M. , Kilicarslan E., Sari H. , Sokmen I.

PHYSICA B-CONDENSED MATTER, cilt.404, ss.3850-3854, 2009 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 404 Konu: 21
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.physb.2009.07.103
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Sayfa Sayıları: ss.3850-3854

Özet

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. (C) 2009 Elsevier B.V. All rights reserved.