http://www.cnr.it/ontology/cnr/individuo/prodotto/ID198634
Universal conductivity and the electrodynamics of graphite at high pressures (Articolo in rivista)
- Type
- Label
- Universal conductivity and the electrodynamics of graphite at high pressures (Articolo in rivista) (literal)
- Anno
- 2012-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.86.035114 (literal)
- Alternative label
A. Perucchi,1 L. Baldassarre,1 C. Marini,2,3 P. Postorino,2 F. Bernardini,4 S. Massidda,4 and S. Lupi2 (2012)
Universal conductivity and the electrodynamics of graphite at high pressures
in Physical review. B, Condensed matter and materials physics (Online)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- A. Perucchi,1 L. Baldassarre,1 C. Marini,2,3 P. Postorino,2 F. Bernardini,4 S. Massidda,4 and S. Lupi2 (literal)
- Pagina inizio
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 Sincrotrone Trieste S.C.p.A., Area Science Park, I-34012 Basovizza, Trieste, Italy
2 CNR-IOM and Dipartimento di Fisica, Universit`a di Roma \"La Sapienza\", Piazzale Aldo Moro 2, I-00185 Roma, Italy
3 European Synchrotron Radiation Facility, 6 Rue Jules Horowitz, BP220, 38043 Grenoble Cedex, France
4 CNR-IOM Unit`a SLACS and Dipartimento di Fisica, Universit`a di Cagliari, Cittadella Universitaria, I-09042 Monserrato (Ca), Italy (literal)
- Titolo
- Universal conductivity and the electrodynamics of graphite at high pressures (literal)
- Abstract
- We address the in-plane pressure-dependent electrodynamics of graphite through synchrotron-based infrared
spectroscopy and ab initio density functional theory calculations. The Drude term remarkably increases upon
pressure application, as a consequence of an enhancement of both electron and hole charge densities. This is due
to the growth of the band dispersion along the kz direction between the K and H points of the Brillouin zone.
On the other hand, the mid-infrared optical conductivity between 800 and 5000 cm-1 is almost flat, and very
weakly pressure dependent, at least up to 7 GPa. This demonstrates a surprising robustness of the graphene-like
universal quantum conductance of graphite, even when the interlayer distance is significantly reduced. (literal)
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