CPM Seminar

Quantum transport in graphene nanodevices

Didier Mayou

CNRS Grenoble

Graphene two dimensional character combined with current standard lithography processes allow to achieve device smaller than the Dirac electrons wavelength. In this regime, we demonstrate that the electronic properties present deep analogies with subwavelength optics phenomena, and we describe the rich transport physics in graphene-based nanodevices through optical analogies. We introduce the concept of electronic diffraction barriers, which transmission cancels at the Dirac point. This gives central insight in the properties of Graphene subwavelength devices including nanoelectronics standard systems, such as quantum dots. As an application we propose a new type of quantum dots, namely functionalized subwavelength quantum dots, which could be used as molecular spin valves.