Browsing by Author "Reis, Diogo Duarte dos"

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    Near-edge X-ray absorption spectroscopy signature of image potential states in multilayer epitaxial graphene.
    (2016) Coelho Neto, Paula Maciel; Reis, Diogo Duarte dos; Matos, Matheus Josué de Souza; Sá, Thiago Grasiano Mendes de; Gonçalves, Além Mar Bernardes; Lacerda, Rodrigo Gribel; Souza, Angelo Malachias de; Paniago, Rogério Magalhães
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    Room temperature observation of the correlation between atomic and electronic structure of graphene on Cu(110).
    (2016) Silva, Thais Chagas Peixoto; Cunha, Thiago Henrique Rodrigues da; Matos, Matheus Josué de Souza; Reis, Diogo Duarte dos; Araujo, Karolline Aparecida de Souza; Malachias, Angelo; Mazzoni, Mario Sergio de Carvalho; Ferlauto, Andre Santarosa; Paniago, Rogério Magalhães
    In this work we have used atomically-resolved scanning tunneling microscopy and spectroscopy to study the interplay between the atomic and electronic structure of graphene formed on copper via chemical vapor deposition. Scanning tunneling microscopy directly revealed the epitaxial match between a single layer of graphene and the underlying copper substrate in different crystallographic orientations. Using scanning tunneling spectroscopy we have directly measured the electronic density of states of graphene layers near the Fermi level, observing the appearance of a series of peaks in specific cases. These features were analyzed in terms of substrate-induced perturbations in the structural and electronic properties of graphene by means of atomistic models supported by density functional theory calculations.