The roles of the magnetic field and impurities on the electronic and optical properties of the InAs quantum ring/dot

Shaer A., Deheliah D., KASAPOĞLU E.

Physica B: Condensed Matter, cilt.706, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 706
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1016/j.physb.2025.417145
  • Dergi Adı: Physica B: Condensed Matter
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Chemical Abstracts Core, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Anahtar Kelimeler: Absorption coefficient, Exact diagonalization, Impurity, Optical properties, Quantum ring
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

This work has explored the behavior of an electron traversing a two-dimensional InAs quantum ring, affected by an off-center impurity and exposed to a magnetic field. These investigations have involved analyzing the energy spectrum and determining both linear and non-linear absorption coefficients. To solve the Schrödinger equation of the system, the numerical diagonalization method was utilized by using by choosing orthonormal base functions that are solutions of two-dimensional isotropic harmonic oscillator. For the absorption coefficients including the linear and third-order nonlinear terms the standard density matrix formalism combined with the perturbation expansion method is used.