Making angle-resolved photoemission measurements on corrugated monolayer crystals: Suspended exfoliated single-crystal graphene (Articolo in rivista)

Type
Label
  • Making angle-resolved photoemission measurements on corrugated monolayer crystals: Suspended exfoliated single-crystal graphene (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.84.115401 (literal)
Alternative label
  • Knox, KR (Knox, Kevin R.)1,2; Locatelli, A (Locatelli, Andrea)3; Yilmaz, MB (Yilmaz, Mehmet B.)4; Cvetko, D (Cvetko, Dean)5,6; Mentes, TO (Mentes, Tevfik Onur)3; Nino, MA (Angel Nino, Miguel)3,7; Kim, P (Kim, Philip)1; Morgante, A (Morgante, Alberto)5,8; Osgood, RM (Osgood, Richard M., Jr.)2 (2011)
    Making angle-resolved photoemission measurements on corrugated monolayer crystals: Suspended exfoliated single-crystal graphene
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Knox, KR (Knox, Kevin R.)1,2; Locatelli, A (Locatelli, Andrea)3; Yilmaz, MB (Yilmaz, Mehmet B.)4; Cvetko, D (Cvetko, Dean)5,6; Mentes, TO (Mentes, Tevfik Onur)3; Nino, MA (Angel Nino, Miguel)3,7; Kim, P (Kim, Philip)1; Morgante, A (Morgante, Alberto)5,8; Osgood, RM (Osgood, Richard M., Jr.)2 (literal)
Pagina inizio
  • 115401 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prb.aps.org/pdf/PRB/v84/i11/e115401 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 84 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Columbia Univ, Dept Phys, New York, NY 10027 USA 2. Columbia Univ, Dept Appl Phys, New York, NY 10027 USA 3. Elettra Sincrotrone Trieste SCpA, Trieste, Italy 4. Fatih Univ, Dept Phys, Istanbul, Turkey 5. CNR IOM, Lab Nazl TASC, Trieste, Italy 6. Univ Ljubljana, Fac Math & Phys, Ljubljana, Slovenia 7. Inst Madrileno Estudios Avanzados IMDEA Nanocienc, E-28049 Madrid, Spain 8. Univ Trieste, Dept Phys, I-34127 Trieste, Italy (literal)
Titolo
  • Making angle-resolved photoemission measurements on corrugated monolayer crystals: Suspended exfoliated single-crystal graphene (literal)
Abstract
  • Free-standing exfoliated monolayer graphene is an ultrathin flexible membrane, which exhibits out-of-plane deformation or corrugation. In this paper, a technique is described to measure the band structure of such free-standing graphene by angle-resolved photoemission. Our results show that photoelectron coherence is limited by the crystal corrugation. However, by combining surface morphology measurements of the graphene roughness with angle-resolved photoemission, energy-dependent quasiparticle lifetime and band-structure measurements can be extracted. Our measurements rely on our development of an analytical formulation for relating the crystal corrugation to the photoemission linewidth. Our angle-resolved photoemission spectroscopy measurements show that, despite significant deviation from planarity of the crystal, the electronic structure of exfoliated suspended graphene is nearly that of ideal, undoped graphene; we measure the Dirac point to be within 25 meV of E(F). Further, we show that suspended graphene behaves as a marginal Fermi liquid, with a quasiparticle lifetime that scales as (E - E(F))(-1); comparison with other graphene and graphite data is discussed. (literal)
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