Rashba spin-orbit coupling effects on the optical properties of double quantum wire under magnetic field

Karaaslan Y., Gisi B., Sakiroglu S., Kasapoglu E., Sari H., Sokmen I.

SUPERLATTICES AND MICROSTRUCTURES, cilt.93, ss.32-39, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 93
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.spmi.2016.02.043
  • Dergi Adı: SUPERLATTICES AND MICROSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.32-39
  • Anahtar Kelimeler: Optical properties, Double quantum wire, Anharmonic potential, Rashba spin-orbit interaction, APPLIED ELECTRIC-FIELD, REFRACTIVE-INDEX, WELL, TRANSITIONS, DOT, SUPERLATTICE, ABSORPTIONS, SUBBANDS, MODEL
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

We investigate the effects of Rashba spin-orbit interaction on the optical absorption coefficients and refractive index changes associated with transitions between the first two lower-lying electronic levels in double quantum wire. The wire system represented by a symmetric, double quartic-well confinement potential is subjected to a perpendicular magnetic field. The analytical expressions of the linear and third-order nonlinear optical absorption coefficients and refractive index changes are obtained by using the compact density matrix formalism and iterative scheme. Optical properties are investigated as a function of structural parameter, magnetic field, Rashba spin-orbit interaction and photon energies. Numerical results reveal that competing effects between spin-orbit interaction and magnetic field modify strongly the optical properties and can be altered by these parameters. (C) 2016 Elsevier Ltd. All rights reserved.