Valley-valve effect and even-odd chain parity in p-n graphene junctions (Articolo in rivista)

Type
Label
  • Valley-valve effect and even-odd chain parity in p-n graphene junctions (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cresti, A; Grosso, G; Parravicini, GP (2008)
    Valley-valve effect and even-odd chain parity in p-n graphene junctions
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cresti, A; Grosso, G; Parravicini, GP (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 77 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • \"[Cresti, Alessandro; Grosso, Giuseppe] NEST CNR INFM, I-56127 Pisa, Italy; [Cresti, Alessandro; Grosso, Giuseppe] Univ Pisa, Dipartimento Fis E Fermi, I-56127 Pisa, Italy; [Parravicini, Giuseppe Pastori] NEST CNR INFM, I-27100 Pavia, Italy; [Parravicini, Giuseppe Pastori] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy (literal)
Titolo
  • Valley-valve effect and even-odd chain parity in p-n graphene junctions (literal)
Abstract
  • We address the current blocking by a p-n junction in a zigzag graphene ribbon by means of numerical and analytic investigations. Ribbons with superimposed gate potentials perfectly block the current in the energy range, where a single energy band is active in both the n and the p regions, if the number of carbon chains is even. In the same conditions, an odd number of chains allows current transmission. We interpret this even-odd valley-valve effect in terms of the underlying honeycomb topology and crystal structure symmetry. (literal)
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