Edge states and quantum dots in suspended graphene

Rövid cím: 
Edge states and quantum dots in suspended graphene
Időpont: 
2016. 03. 04. 10:15
Hely: 
BME Fizikai Intézet, Elméleti Fizika Tanszék, Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba
Előadó: 
Endre Tóvári (BUTE Dept. of Physics)

Periodic conductance oscillations have been observed near quantum Hall plateaus in suspended graphene nanoribbons, attributed to quantum dots that form due to a disorder potential. In a wide flake with two gates, a double-dot system's signature has been observed. Electrostatic confinement is enabled in single-layer graphene due to the gaps between Landau levels, suggesting a way to create gate-defined localized states. Measurements on a test geometry are presented.