2007
DOI: 10.1063/1.2426904
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Plasma waves in two-dimensional electron-hole system in gated graphene heterostructures

Abstract: Plasma waves in the two-dimensional electron-hole system in a graphene-based heterostructure controlled by a highly conducting gate are studied theoretically. The energy spectra of two-dimensional electrons and holes are assumed to be conical (neutrinolike), i.e., corresponding to their zero effective masses. Using the developed model, we calculate the spectrum of plasma waves (spatio-temporal variations of the electron and hole densities and the self-consistent electric potential). We find that the sufficient… Show more

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Cited by 242 publications
(203 citation statements)
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“…A large amount of unexplored territory for THz technology still remains mainly due to a lack of affordable and efficient THz sources and detectors 142 . The frequency of graphene plasma waves 143,144 lies in the THz range, as well as the gap of GNRs, and the BLG tunable band gap, making graphene appealing for THz generation and detection. Various THz sources were suggested, based on electrical 143,144 or optical 143,144 pump of graphene devices.…”
Section: J Thz Devicesmentioning
confidence: 99%
See 1 more Smart Citation
“…A large amount of unexplored territory for THz technology still remains mainly due to a lack of affordable and efficient THz sources and detectors 142 . The frequency of graphene plasma waves 143,144 lies in the THz range, as well as the gap of GNRs, and the BLG tunable band gap, making graphene appealing for THz generation and detection. Various THz sources were suggested, based on electrical 143,144 or optical 143,144 pump of graphene devices.…”
Section: J Thz Devicesmentioning
confidence: 99%
“…The frequency of graphene plasma waves 143,144 lies in the THz range, as well as the gap of GNRs, and the BLG tunable band gap, making graphene appealing for THz generation and detection. Various THz sources were suggested, based on electrical 143,144 or optical 143,144 pump of graphene devices. Recent experimental observations of THz emission 145 and amplification 146 in optically pumped graphene show the feasibility of graphene-based THz generation.…”
Section: J Thz Devicesmentioning
confidence: 99%
“…The linear dependence (47) remains valid until P (t) reduces down to P (t) ≃ 1 (until t ≃ P 0 /Γ); after that P (t) decays exponentially like in (46). The current j(t) in the strong excitation regime P 0 ≫ 1 equals its highest possible value en s V and time-independent at t < ∼ P 0 /Γ, and then exponentially decays (at the time scale ≃ Γ −1 ) down to zero, as shown in Figure 7b.…”
Section: Response Of Graphene To a Pulse Excitationmentioning
confidence: 99%
“…Electrodynamic properties of graphene, which have been studied both experimentally 31,32,33,34 and theoretically 5,15,16,24,28,29,35,36,37,38,39,40,41,42,43,44,45,46,47,48 , also demonstrate non-trivial features in the frequency dependent conductivity 15,24,28,35,48 , photon-assisted transport 36 , microwave and far-infrared response 29,37,38,39,40,41 , plasmons spectrum 42,43,44,45,46 , et cetera. New electromagnetic modes, specific only for the graphene system, have been also predicted 47,48 .…”
Section: Introductionmentioning
confidence: 99%
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