Spin-orbit interaction and magnetic field effects on the energy dispersion of double quantum wire

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

SUPERLATTICES AND MICROSTRUCTURES, cilt.85, ss.401-409, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 85
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.spmi.2015.06.002
  • Dergi Adı: SUPERLATTICES AND MICROSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.401-409
  • Anahtar Kelimeler: Double quantum wire, Anharmonic potential, Rashba spin-orbit interaction, RASHBA, SCATTERING, TRANSPORT, POLARIZATION, CONDUCTANCE, POTENTIALS, SUBBANDS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

We investigate the effects of Rashba spin-orbit interaction on the electronic energy dispersion and zero-temperature ballistic conductance of double quantum wire under the influence,of perpendicular magnetic field. The wire system is represented by a symmetric, double quartic-well confinement potential. Numerical results reveal that competing effects between spin-orbit interaction and magnetic field modify strongly the energy subband structure and introduce anticrossings between subbands. Moreover, it is found that the conductance character of a quasi-one-dimensional ballistic conductor, which is closely related to the energy-dispersion spectrum, is very sensitive to the shape of potential profile, magnetic field and Rashba spin-orbit coupling. (C) 2015 Elsevier Ltd. All rights reserved.