publication . Preprint . 2013

Chiral Tunnelling in Twisted Graphene Bilayer

He, Wen-Yu; Chu, Zhao-Dong; He, Lin;
Open Access English
  • Published: 31 Jan 2013
Abstract
The perfect transmission in graphene monolayer and the perfect reflection in Bernal graphene bilayer for electrons incident in the normal direction of a potential barrier are viewed as two incarnations of the Klein paradox. Here we show a new and unique incarnation of the Klein paradox. Owing to the different chiralities of the quasiparticles involved, the chiral fermions in twisted graphene bilayer shows adjustable probability of chiral tunnelling for normal incidence: they can be changed from perfect tunnelling to partial/perfect reflection, or vice versa, by controlling either the height of the barrier or the incident energy. As well as addressing basic physi...
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Subjects
arXiv: High Energy Physics::LatticeCondensed Matter::Mesoscopic Systems and Quantum Hall EffectPhysics::Optics
free text keywords: Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
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