Two-dimensional plasmons in monolayer graphite

Nagashima, A.; Nuka, Kenji; Itoh, Hiroshi; Ichinokawa, T.; Oshima, C.; Otani, Shigeki; Ishizawa, Y.

doi:10.1016/0038-1098(92)90656-t

Cited by 33 publications

(27 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results have been reported for GR/TiC(111) [72], in which also a strong GR/substrate hybridization occurs. Thus, for GR sheets epitaxially grown on both Ni(111) and TiC(111), where hybridization between graphene and substrate states takes place, the interband plasmon exhibits a 2D behavior.…”

Section: Interband Plasmonsupporting

confidence: 89%

Substrate-dependent plasmonic properties of supported graphene

et al. 2015

View full text Add to dashboard Cite

Section: Interband Plasmonsupporting

confidence: 89%

Substrate-dependent plasmonic properties of supported graphene

et al. 2015

View full text Add to dashboard Cite

“…3b), indicative of plasmons with a 2D character. 3,[6][7][8][9] In principle, a perfectly 2D excitation is to be further supported by the absence of an out-of-plane electronic components of the state. 4 We carefully examined this possibility by tilting the graphene specimen ( Fig.…”

Section: Figs 2a and 2bmentioning

confidence: 99%

π-plasmon dispersion in free-standing graphene by momentum-resolved electron energy-loss spectroscopy

et al. 2015

View full text Add to dashboard Cite

The π-plasmon dispersion in graphene was scrutinized by momentum(q)-resolved electron energy-loss spectroscopy with an improved q resolution and found to display the square root of q dispersion characteristic of the collective excitation of two-dimensional electron systems, in contrast with previous experimental and theoretical studies which reported a linear q dispersion. Our theoretical elaborations on the q-dependent spectra affirm this square root of q relation and further unveil an in-plane electronic anisotropy. The physical property of the π plasmon is thoroughly compared to that of the two-dimensional plasmon due to carriers of the Dirac fermions. A clear distinction between the π plasmon and the two-dimensional Dirac plasmon was demonstrated, clarifying the common notion on correlating the linearly-dispersed Dirac cones to the linear dispersion of the π plasmon previously reported.

show abstract

“…Similar findings have been reported for interacting graphene formed on TiC(111), where an interband plasmon showing a 2D dispersion curve has also been observed. 23,24 However, the square root dispersion obtained for epitaxial graphene is a not expected result, whereas a quadratic dispersion relation is commonly reported in the literature. 25,26 The EEL spectra measured after preparing the graphene/ Cs/Ni(111) system are shown in Fig.…”

mentioning

confidence: 92%

Plasmon dispersion in quasi-freestanding graphene on Ni(111)

Cupolillo

Ligato

Caputi

2013

Applied Physics Letters

View full text Add to dashboard Cite

The electronic properties of graphene formed on Ni(111) by chemical vapor deposition and intercalated with Cs atoms have been studied by angle-resolved electron-energy-loss spectroscopy. The dispersion curve of π plasmon, in comparison with the analogous dispersion curve obtained in the absence of intercalated Cs, shows that alkali metal atoms make graphene to be quasi-free, with a much lowered charge transfer, and with the recovery of the π band linearity at Dirac points.

show abstract

Two-dimensional plasmons in monolayer graphite

Cited by 33 publications

References 17 publications

Substrate-dependent plasmonic properties of supported graphene

Substrate-dependent plasmonic properties of supported graphene

π-plasmon dispersion in free-standing graphene by momentum-resolved electron energy-loss spectroscopy

Plasmon dispersion in quasi-freestanding graphene on Ni(111)

Contact Info

Product

Resources

About