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- Title
Quantum Plasma Terahertz Oscillations Including Exchange Interactions of Electrons and Holes in Single-Walled Carbon Nanotubes.
- Authors
Shabbir, U.; Khan, S. A.; Iqbal, Z.; Raza, A.
- Abstract
Quantum hydrodynamics analysis of electrostatic oscillations in single-walled carbon nanotubes (CNTs) is presented by considering a metallic CNT as a long cylindrical shell surrounded by degenerate electron-hole plasma, as well as non-degenerate ions and charged nanoparticles. Charging of nanoparticles takes place due to field emission with space charge effect over large distance relevant to ions and nanoparticles length scales. Electron- and hole-density perturbations are obtained by including the exchange effects in the local density approximation, whereas dynamics of ions and nanoparticles is considered via classical dynamical equations. Terahertz frequency acoustic wave dispersion properties are examined numerically including an additional case of axial ion drift at equilibrium giving rise to an unstable mode. The effects of exchange-correlations, density balance and quantum-scale forces are elaborated for different angular modes with illustrations using typical parameters.
- Subjects
PLASMONS (Physics); CARBON nanotubes; SOLID-state plasmas; SINGLE walled carbon nanotubes; CYLINDRICAL shells; ELECTRONS; FIELD emission
- Publication
Journal of Low Temperature Physics, 2022, Vol 207, Issue 1/2, p71
- ISSN
0022-2291
- Publication type
Article
- DOI
10.1007/s10909-022-02673-4