Symmetry-induced band-gap opening in graphene superlattices (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Symmetry-induced band-gap opening in graphene superlattices (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

Alternative label

• Martinazzo, Rocco; Casolo, Simone; Tantardini, Gian Franco (2010)
  Symmetry-induced band-gap opening in graphene superlattices
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Martinazzo, Rocco; Casolo, Simone; Tantardini, Gian Franco (literal)

Pagina inizio

• 245420 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 81 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note

• DOI:10.1103/PhysRevB.81.245420 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Department of Physical Chemistry and Electrochemistry, University of Milan, V. Golgi 19, 20133 Milan, Italy (Martinazzo, Rocco; Casolo, Simone; Tantardini, Gian Franco) CIMAINA, University of Milan, V. Golgi 19, 20133 Milan, Italy (Martinazzo, Rocco; Tantardini, Gian Franco) CNR-ISTM Institute for Molecular Science and Technology, V. Golgi 19, 20133 Milan, Italy (Tantardini, Gian Franco) (literal)

Titolo

• Symmetry-induced band-gap opening in graphene superlattices (literal)

Abstract

• We study n×n honeycomb superlattices of defects in graphene. The considered defects are missing pz orbitals and can be realized by either introducing C atom vacancies or chemically binding simple atomic species at the given sites. Using symmetry arguments and electronic-structure calculations we show that it is possible to open a band gap without breaking graphene point symmetry. This has the advantage that new Dirac cones appear right close to the gapped region. We find that the induced gaps have an approximate square-root dependence on the defect concentration x=1/n2 and compare favorably with those found in nanoribbons at the same length scale. (literal)

Prodotto di

• Institute of molecular science and technologies (ISTM) (Istituto)
• Nanoingegneria chimica ab-initio: struttura, legame e proprieta' di materiali di interesse tecnologico e dinamica di nanosistemi per il controllo della loro reattivita' chimica (PM.P07.002.003) (Modulo)

Autore CNR

• GIANFRANCO TANTARDINI (Persona)

Incoming links:

Prodotto

• Institute of molecular science and technologies (ISTM) (Istituto)
• Nanoingegneria chimica ab-initio: struttura, legame e proprieta' di materiali di interesse tecnologico e dinamica di nanosistemi per il controllo della loro reattivita' chimica (PM.P07.002.003) (Modulo)

Autore CNR di

• GIANFRANCO TANTARDINI (Persona)