Spin-orbit effects in a graphene bipolar pn junction
Langue
en
Article de revue
Ce document a été publié dans
EPL - Europhysics Letters. 2009-08, vol. 87, n° 4, p. 47005 (1-6)
European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing
Résumé en anglais
A graphene $pn$ junction is studied theoretically in the presence of both intrinsic and Rashba spin-orbit couplings. We show that a crossover from perfect reflection to perfect transmission is achieved at normal incidence ...Lire la suite >
A graphene $pn$ junction is studied theoretically in the presence of both intrinsic and Rashba spin-orbit couplings. We show that a crossover from perfect reflection to perfect transmission is achieved at normal incidence by tuning the perpendicular electric field. By further studying angular dependent transmission, we demonstrate that perfect reflection at normal incidence can be clearly distinguished from trivial band gap effects. We also investigate how spin-orbit effects modify the conductance and the Fano factor associated with a potential step in both $nn$ and $np$ cases.< Réduire
Mots clés en anglais
Electronic transport in mesoscopic systems
Electronic transport in nanoscale materials and structures
Electronic transport in interface structures
Origine
Importé de halUnités de recherche