Hydrogenic donor-related binding energy and diamagnetic susceptibility in multilayer cylindrical quantum dots under hydrostatic pressure

El-Bakkari K., Jaouane M., Fakkahi A., Ed-Dahmouny A., Arraoui R., Azmi H., ...Daha Fazla

Applied Physics A: Materials Science and Processing, cilt.129, sa.8, 2023 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 129 Sayı: 8
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s00339-023-06834-4
  • Dergi Adı: Applied Physics A: Materials Science and Processing
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex
  • Anahtar Kelimeler: Binding energy, Diamagnetic susceptibility, Donor impurity, Hydrostatic pressure, Multilayer cylindrical quantum dots
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

This study employs the finite element method based on the effective-mass approximation (EMA) to numerically investigate the behavior of impurities in multilayer cylindrical quantum dots (MLCQDs). We consider the applied hydrostatic pressure (P) in our numerical analysis. The study presents numerical results for macroscopic parameters that follow the electronic properties, the binding energy (E b), and diamagnetic susceptibility (χ dia) of the ground state (1 s) and some excited states (1p and 2 s) of the impurity in the MLCQDs. The E b and the χ dia for the three states are calculated as a function of the radius R , impurity position z and the hydrostatic pressure. The numerical results show that the binding energies of impurities decrease with the radius for all levels. The Eb1s and Eb1p have three maximum values that typify the number of the quantum dot layer materials contained in our system. Moreover, the diamagnetic susceptibility for the three levels is strongly affected by the hydrostatic pressure, impurity location, and radius.