FINITE ELEMENT ANALYSIS OF VALENCE BAND STRUCTURE OF SQUARE QUANTUM WELL UNDER THE ELECTRIC FIELD

Gunes M., Kasapoglu E., Sari H., AKGÜNGÖR K., Sokmen I.

SURFACE REVIEW AND LETTERS, cilt.16, sa.5, ss.689-696, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 16 Sayı: 5
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1142/s0218625x09013177
  • Dergi Adı: SURFACE REVIEW AND LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.689-696
  • Anahtar Kelimeler: Finite element method, valence sub-band structure, multiband effective mass theory, OPTICAL-PROPERTIES
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Valence band structure with spin-orbit (SO) coupling of GaAs/Ga1-xAlxAs square quantum well (SQW) under the electric field by a calculation procedure based on a finite element method (FEM) is investigated using the multiband effective mass theory ((k) over right arrow . (p) over right arrow method). The validity of the method is confirmed with the results of D. Ahn, S. L. Chuang and Y. C. Chang (J. Appl. Phys. 64 (1998) 4056), who calculated valence band structure, using axial approximation for Luttinger-Kohn Hamiltonian and finite difference method. Our results demonstrated that SO coupling and electric field have significant effects on the valence band structure.