Repositorio Institucional de la Universidad de Oviedo

Citación:

Descripción física:

ISSN:

Patrocinado por:

The authors acknowledge support from the European Commission under the Graphene Flagship (GrapheneCore1, Grant 696656) and the Spanish Ministry of Economy and Competitiveness (National Projects MAT2014-53432-C5-4-R and MAT2015-65525-R). S.C. and Z.Y. acknowledge the National Natural Science Foundation of China (11474239 and 21673192) and MOST of China (2016YFA0200601). We thank Dr. M. Okuda for help with the illustrations.