Evidence for graphene edges beyond zigzag and armchair

By Pekka Koskinen, Sami Malola, H. Hakkinen. 2009

252 citations recorded by the source corpus.

The edges of nanoscopic objects determine most of their properties. For this reason the edges of honeycomb carbon---always considered either zigzag- or armchairlike---need special attention. In this Brief Report we provide experimental evidence confirming a previous unexpected prediction: zigzag is a metastable edge as its planar reconstruction lowers energy and forms the most stable graphene edge. Our evidence is based on reanalyzing a recent experiment. Since the reconstructed edge, along with other unconventional edges we discuss, has distinct chemical properties, this discovery urges for care in experiments and theory---we must enter the realm beyond zigzag and armchair.

Subfields: Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e0d85d852eb80285d5f0e0943f1bad6ab1974573

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Electrical and Electronic Engineering

1. G. Giavaras
2. Franco Nori
3. Y. Bliokh
4. V. Freilikher
5. A. Rozhkov

In Materials Chemistry

1. G. Giavaras
2. Franco Nori
3. Y. Bliokh
4. V. Freilikher
5. A. Rozhkov

Citations in the corpus

• Annealing-induced structural changes of carbon onions: High-resolution transmission electron microscopy and Raman studies (2014, unknown): “[41] Koskinen P, Malola S, Häkkinen H.”
• Electronic properties of mesoscopic graphene structures: Charge confinement and control of spin and charge transport (2011, methodology): “Most importantly, it appears that the pristine zigzag edge is unstable: recently, it was predicted on the basis of density-functional theory (DFT) calculations [39] that it might undergo reconstruction at room temperature, and become a reczag (short for ‘reconstructed zigzag’ [40], see”