Quantum dots at room temperature carved out from few-layer graphene

Amelia Barreiro; Herre S J van der Zant; Lieven M K Vandersypen

doi:10.1021/nl3036977

Quantum dots at room temperature carved out from few-layer graphene

Nano Lett. 2012 Dec 12;12(12):6096-100. doi: 10.1021/nl3036977. Epub 2012 Nov 26.

Authors

Amelia Barreiro¹, Herre S J van der Zant, Lieven M K Vandersypen

Affiliation

¹ Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. ab3690@columbia.edu

PMID: 23163610
DOI: 10.1021/nl3036977

Abstract

We present graphene quantum dots endowed with addition energies as large as 1.6 eV, fabricated by the controlled rupture of a graphene sheet subjected to a large electron current in air. The size of the quantum dot islands is estimated to be in the 1 nm range. The large addition energies allow for Coulomb blockade at room temperature, with possible application to single-electron devices.

Publication types

Research Support, Non-U.S. Gov't