Phonon-polariton waves on the surface of SiC crystal

Казанцев, Д. В.

doi:10.1134/s0021364006080054

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…The RMF B 1 induces an electric field E which is determined in part by the boundary conditions, and is therefore not unique. Two different sets of boundary conditions have been employed in past studies, each leading to vastly different stability criteria [1][2][3][4]. Here we show that there is in fact a large family of boundary conditions consistent with the problem, and that a one-parameter subset of these characterizes those configurations most relevant to laboratory plasmas.…”

Section: Introductionmentioning

confidence: 70%

“…This case was first treated by Kazantsev [1], although an algebraic error resulted in incorrect stability criteria. Kurbatov [2] later obtained the correct characteristic polynomial and produced a plot of the stability regions.…”

Section: A P=0 Casementioning

confidence: 99%

“…We show that for many boundary conditions and wide regions in the parameter space, RMFs oscillating far below the cyclotron frequency can cause linear instabilities in the motion which break µ-invariance and energize particles. This model system of low frequency RMF has been studied before, albeit in studies focused on finding conditions for stable solutions [1][2][3][4], and is particularly important to current drive in field-reversed configuration (FRC) plasmas [5,6]. However, previous treatments have not addressed two important aspects of the problem, namely the roles of adiabatic invariance and boundary conditions in the theory.…”

Section: Introductionmentioning

confidence: 99%

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Energizing charged particles by an orbit instability in a slowly rotating magnetic field

Palmerduca¹,

Qin²,

Cohen³

2022

Preprint

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The stability of charged particle motion in a uniform magnetic field with an added spatially uniform transverse rotating magnetic field (RMF) is studied analytically. It is found that the stability diagram of a single-particle's orbit depends critically on the chosen boundary conditions.We show that for many boundary conditions and wide regions in the parameter space, RMFs oscillating far below the cyclotron frequency can cause linear instabilities in the motion which break µ-invariance and energize particles. Such energization may appear at odds with the adiabatic invariance of µ; however, adiabatic invariance is an asymptotic result, and does not preclude such heating by magnetic fields oscillating at slow frequencies. This mechanism may contribute to heating in the edge plasma of field-reversed configurations (FRCs) in rotamak-FRC experiments.Furthermore, these RMF-driven instabilities may significantly enhance azimuthal current drive during the formation of FRCs in such devices.

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Section: Introductionmentioning

confidence: 70%

Section: A P=0 Casementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energizing charged particles by an orbit instability in a slowly rotating magnetic field

Palmerduca¹,

Qin²,

Cohen³

2022

Preprint

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“…The band location and width are determined by the oscillator's effective mass and the interatomic field strength. As observed in SiC and h‐BN using s ‐SNOM, SPhPs show considerable long lifetime (low damping rate).…”

Section: Origins and Classification Of Surface Polaritonsmentioning

confidence: 99%

Nanoimaging and Nanospectroscopy of Polaritons with Time Resolved s‐SNOM

Yao

et al. 2019

Advanced Optical Materials

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The development of electronics and photonics is entering a new era of ultrahigh speed sensing, data processing, and telecommunication. The carrier frequencies of the next‐generation electronic devices inevitably extend beyond radio frequencies, marching toward the nominally photonics‐dominated territories, e.g., terahertz and beyond. As a result, electronic and photonic techniques naturally merge and seek common ground. At the forefront of this technical trend is the field of polaritonics, where polaritons are half‐light, half‐matter quasiparticles that carry the properties of both “bare” photons and “bare” dipole‐carrying excitations. The Janus‐faced nature of polaritons renders the unique capability of operando control using photoexcitation or applied electric field. Here, state‐of‐the‐art ultrafast polaritonic phenomena probed by scattering‐type scanning near‐field optical microscope (s‐SNOM) techniques is reviewed. The ultrafast dynamical control and loss‐reduction of the polariton propagation are discussed with special emphasis on the creation and probing of the tip or edge induced plasmon– and phonon–polaritons in low‐dimensional systems. The detailed technical aspects of s‐SNOM and its possible future development are also presented.

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Apertureless SNOM imaging of the surface phonon polariton waves: what do we measure?

Казанцев

Ryssel

2013

Appl. Phys. A

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Phonon-polariton waves on the surface of SiC crystal

Cited by 11 publications

References 13 publications

Energizing charged particles by an orbit instability in a slowly rotating magnetic field

Energizing charged particles by an orbit instability in a slowly rotating magnetic field

Nanoimaging and Nanospectroscopy of Polaritons with Time Resolved s‐SNOM

Apertureless SNOM imaging of the surface phonon polariton waves: what do we measure?

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