Study of the electron-photon interaction on the spin-dependent transport in nano-structures

Modarresi M., MOĞULKOÇ A., Roknabadi M. R., Behdani M.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.57, ss.76-82, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 57
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.physe.2013.10.031
  • Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.76-82
  • Anahtar Kelimeler: Graphene quantum dot, Hubbard model, Electron-photon interaction, QUANTUM-DOT, MESOSCOPIC RING, CONDUCTANCE
  • Ankara Üniversitesi Adresli: Evet

Özet

Transport through a nano device in the presence of light illumination has been studied by using unitary-transformation scheme together with the non-equilibrium Green's function formalism. The non-interacting Hamiltonian is written within the framework of the tight binding model and structureless electrodes are described in wide-band approximation. The interaction between electrons is modeled by the mean-field Hubbard term. Our results indicate that we can tune the "intrinsic magnetization of zigzag edge" and "spin-polarized current" by using light illumination. (C) 2013 Elsevier B.V. All rights reserved,