Study of the electron-photon interaction on the spin-dependent transport in nano-structures
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, cilt.57, ss.76-82, 2014 (SCI-Expanded, Scopus)
- 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,