Observation of acoustic plasma waves with a velocity approaching the speed of light

Andreev, I. V.; Muravev, V. M.; Semenov, N. D.; Кукушкин, И. В.

doi:10.1103/physrevb.103.115420

Cited by 16 publications

(11 citation statements)

References 25 publications

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“…At zero magnetic field, experimental data closely follow the theoretical prediction (1) (black line in Fig. 3) [17,18], given √ ε. Red dots denote the experimentally obtained asymptotics in high magnetic fields ω inf (q).…”

Section: B Plasmon-polariton Dispersionsupporting

confidence: 78%

“…As for the gated 2DES under consideration, the edge and bulk magnetoplasmons as well as their splitting in a weak magnetic field have been previously investigated in [18]. In the same work, it has been established that given strong retardation, magnetodispersion of the modes in a screened disk is well described by the following equation [19,24,28,29]:…”

Section: A Magnetoplasmons In Screened Disksmentioning

confidence: 99%

“…It was shown that retardation leads to a considerable reduction in the resonant plasma frequency [15]. In particular, for practically important gated plasmons, the retarded frequency is given by [17,18]:…”

Section: Introductionmentioning

confidence: 99%

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Magnetodispersion of Two-Dimensional Plasmon Polaritons

Andreev,

Muravev,

Semenov

et al. 2021

Preprint

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We have investigated the spectrum of two-dimensional (2D) plasmon polaritons over the full range of magnetic fields. In our study, we investigate a disk-shaped two-dimensional electron system (2DES) with a metallic gate on the backside of the substrate. Importantly, we show that 2D plasmon polaritons hybridize with the TM0 photonic mode of a dielectric waveguide formed by a sample substrate. We have developed a theory for plasmon-polaritons in an infinite 2DES. We find the experimental data to be in good agreement with the developed theory.

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Section: B Plasmon-polariton Dispersionsupporting

confidence: 78%

Section: A Magnetoplasmons In Screened Disksmentioning

confidence: 99%

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Magnetodispersion of Two-Dimensional Plasmon Polaritons

Andreev,

Muravev,

Semenov

et al. 2021

Preprint

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“…Plasmons are especially intriguing when considered in so-called gated two-dimensional (2D) electron systems (ESs), with a planar metal electrode (gate) in proximity and parallel to the 2DES. Remarkably, these gated plasmons make possible the detection of terahertz radiation [1-8], compression of light [9,10], study of relativistic effects [11], etc.…”

mentioning

confidence: 99%

“…Width, Velocity, Figure 3. The dimensionless soliton width ∆X = ∆ξ/d extracted from the concentration dependency n(X), plotted as a function of the velocity U = u/vp (11). Gray and green dashed lines denote the asymptotics ( 15) and ( 16), correspondingly.…”

mentioning

confidence: 99%

Plasma solitons in gated two-dimensional electron systems: exactly solvable analytical model for the regime beyond weak non-linearity

Zabolotnykh

2022

Preprint

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We analytically study plasma solitary waves, or solitons, in a two-dimensional (2D) electron system (ES) placed in close proximity to and between two ideal metallic gates. As a rule, solitons are described using a perturbative approach applicable only in the weak non-linearity regime. In contrast, we analyze solitons considering a non-perturbative model. This framework enables an exact analytical description of the soliton shape. Moreover, it can be achieved in the regime beyond weak non-linearity -when the concentration deviation due to the soliton is of the order of the equilibrium concentration. We determine the conditions required for a soliton to exist and derive the relationship between its amplitude, width, and velocity. We believe that our results obtained for the given model can provide valuable insight into the physics of non-linear waves.

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Plasmon Thermal Conductance and Thermal Conductivity of Metallic Nanofilms

et al. 2023

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The thermal conductance and thermal conductivity of surface plasmon polaritons propagating along a metallic nanofilm deposited on a substrate are quantified and analyzed, as functions of the film thickness, length, and temperature. This is done by analytically solving the dispersion relation of plasmons for their wave vectors and propagation length. It is shown that the plasmon energy transport along the film interfaces is driven by two modes characterized by symmetric and antisymmetric spatial distributions of the magnetic field. For a gold nanofilm deposited on a silicon substrate, both modes have comparable contributions of the plasmon thermal conductance, which takes higher values for hotter and/or longer nanofilms and saturates for films thicker than 50 nm. This saturation arises from the decoupling of the plasmon modes, the transition of which to a coupled state for thinner films maximizes the plasmon thermal conductivity. For a 1-cm-long gold nanofilm at 300 K, the maximum thermal conductivity appears for a thickness of 10 nm and takes the value of 15 W m −1 K −1 , which is about 25% of its electron counterpart. As a result of the huge propagation distance (> 1 cm) of plasmons, this plasmon thermal conductivity increases significantly with the film length and temperature and it could therefore be useful to improve the heat dissipation along metallic nanofilms.

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Observation of acoustic plasma waves with a velocity approaching the speed of light

Cited by 16 publications

References 25 publications

Magnetodispersion of Two-Dimensional Plasmon Polaritons

Magnetodispersion of Two-Dimensional Plasmon Polaritons

Plasma solitons in gated two-dimensional electron systems: exactly solvable analytical model for the regime beyond weak non-linearity

Plasmon Thermal Conductance and Thermal Conductivity of Metallic Nanofilms

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