The multilayered spherical quantum dot under a magnetic field

BOZ F., AKTAŞ Ş., BİLEKKAYA A., OKAN Ş. E.

Applied Surface Science, cilt.256, sa.12, ss.3832-3836, 2010 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 256 Sayı: 12
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.apsusc.2010.01.036
  • Dergi Adı: Applied Surface Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.3832-3836
  • Anahtar Kelimeler: Binding energy, Magnetic field, Quantum dot
  • Trakya Üniversitesi Adresli: Evet

Özet

The binding energy of an impurity located at the center of multilayered spherical quantum dot (MSQD) is reported as a function of the dot and barrier thickness for different alloy compositions under the influence of a magnetic field. Within the effective mass approximation, the binding energy has been calculated using the fourth order Runge-Kutta method without magnetic field. A variational approach has been employed if a magnetic field is present. The binding energy in MSQD with equal dot and barrier thickness is calculated. It is shown that the binding energy in MSQD differs from that of a single quantum dot. Also, the geometry is dominant on the binding energy for thin MSQDs, but the magnetic field becomes more effective for thick MSQDs. © 2010 Elsevier B.V. All rights reserved.