Electrostatic confinement of electrons in graphene nanoribbons

2008/12/31 by Xinglan Liu, Jeroen B. Oostinga, Alberto F. Morpurgo +1 · 1 citation
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Condensed matter physics #Coulomb #Coulomb blockade #Electron #Gate voltage #Graphene #Graphene nanoribbons #Graphene research and applications #Materials science #Nanotechnology #Optoelectronics #Physics #Quantum and electron transport phenomena #Quantum mechanics #Transistor #Voltage #Yield (engineering) #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.80.121407

published as Phys. Rev. B 80, 121407(R) (2009) · 4 figures, 1 table, 4.4pages

openalex publication_date 2009/09/28 · arxiv created 2009/12/11 · arxiv updated 2010/01/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Coulomb blockade is observed in a graphene nanoribbon device with a top gate. When two pn junctions are formed via the back gate and the local top gate, electrons are confined between the pn junctions which act as the barriers. When no pn junctions are induced by the gate voltages, electrons are still confined, as a result of strong disorder, but in a larger area. Measurements on five other devices with different dimensions yield consistent results.

Citations

• Gate-induced insulating state in bilayer graphene devices
• Quantum Dots in Graphene
• Effect of edge roughness in graphene nanoribbon transistors
• Conductance quantization and transport gaps in disordered graphene nanoribbons
• Energy Gaps in Etched Graphene Nanoribbons
• Electric Field Effect in Atomically Thin Carbon Films
• Graphene nano-ribbon electronics
• Edge state in graphene ribbons: Nanometer size effect and edge shape dependence
• Chaotic Dirac Billiard in Graphene Quantum Dots

Cited by

• Two-electronn−pdouble quantum dots in carbon nanotubes
• Signatures of single quantum dots in graphene nanoribbons within the quantum Hall regime