Shallow donor impurity binding energy in the V-shaped quantum well under the crossed electric and magnetic fields

Kasapoglu E., Sokmen I.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.27, ss.198-203, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.physe.2004.11.002
  • Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.198-203
  • Anahtar Kelimeler: crossed electric and magnetic field, impurity binding energy, GAAS/GAALAS MULTIQUANTUM WELLS, FAR-INFRARED ABSORPTION, THEORETICAL CALCULATIONS, HYDROGENIC IMPURITY, STATES, EXCITONS, TRANSPORT, SPECTRUM
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

We have calculated variationally the ground state binding energy of a hydrogenic donor impurity in V-shaped quantum well (VQW) or full-graded GaAs/Ga1-xAlxAs quantum wells in the presence of crossed electric and magnetic fields. These homogeneous crossed fields are such that the magnetic field is parallel to the heterostructure layers and the electric field is applied perpendicular to the magnetic field. The dependence of the donor impurity binding energy on the well width and the strength of the electric and magnetic fields are discussed. We hope that obtained results will provide important improvements in device applications, especially for narrow well widths and for a suitable choice of both fields. (c) 2004 Elsevier B.V. All rights reserved.