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, sa.21, ss.3850-3854, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 404 Sayı: 21
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.physb.2009.07.103
  • Dergi Adı: PHYSICA B-CONDENSED MATTER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3850-3854
  • Anahtar Kelimeler: Quantum well-wire, Impurity, Magnetic field, Diamagnetic susceptibility, PHOTOIONIZATION CROSS-SECTION, BINDING-ENERGY, DONOR IMPURITY, SHALLOW DONOR, OPTICAL-PROPERTIES, ELECTRIC-FIELD, STATES, TRANSITION
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

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.