Heat capacity of an electron gas at the surface of a nanotube with its superlattice in a magnetic field

Ermolaev, A. M.; Rashba, G. I.; Solyanik, Maria

doi:10.1063/1.3665876

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…The longitudinal permittivity of the nanotube electron gas in a magnetic field and the dispersion equation for plasmons at an arbitrary ratio between the wave phase velocity and the Fermi velocity were obtained in [4]. The results of the calculation of magnetoplasmon spectra, zero sound, and spin waves at the surface of a nonferromagnetic cylindrical nanotube in a longitudinal magnetic field were reported in [11,12] where the electron dispersion law was assumed parabolic, as in [4,9,10]. It was dem onstrated that in a magnetic field the subband plasmon frequency shifts proportionally to the magnetic flux through the tube cross section.…”

Section: Dispersion Of Plasma Waves At the Surface Of Semiconductormentioning

confidence: 99%

Semiconductor nanotube plasma

2014

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The theory of dispersion of surface plasma waves in semiconductor nanotubes is presented. The effect of screening the Coulomb field of a static point charge by a magnetized electron gas of a nanotube is investigated. The main properties of the semiconductor nanotube plasma, 3D plasma, and planar 2D plasma are compared. The dependences of the critical temperature and thermodynamic properties of a supercon ducting quantum cylinder on the characteristics of the system are studied.

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Section: Dispersion Of Plasma Waves At the Surface Of Semiconductormentioning

confidence: 99%

Semiconductor nanotube plasma

2014

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“…The quantum constant is taken equal to unity. Thus, the energy spectrum of an electron is a set of minizones with a width 2∆ with root singularities of the density of states at their boundaries ε l , ε l + 2∆ [27].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Umklapp Processes on Magnetoplasma Waves on the Surface of a Semiconductor Nanotube with a Superlattice

Rashba

2019

Acta Phys. Pol. A

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The spectra of plasma waves in the electron gas on the surface of a semiconductor nanotube with a superlattice in a parallel magnetic field have been studied using the self-consistent field method. The analytical results for the dispersion relation of the plasmon branch are derived in a tight-binding approximation which takes into account the umklapp effects in the superlattice direction. The long-wave intra-and interband magnetoplasmon frequencies in a degenerate electron gas are calculated both in quasiclassical and in quantum limits. In case of a large number of the filled electron levels, associated with the orbital motion of electrons, the magnetoplasmon frequencies exhibit the oscillations, which are similar to the de Haas-van Alphen oscillations upon variation of nanotube parameters and the Aharonov-Bohm oscillations upon variation of the magnetic flux through the nanotube cross-section.

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“…Since the discovery of carbon nanotubes in 1991 [1], investigations of the physical properties of these novel materials have been rated as a fundamentally important trend in physics of condensed matter [2,3]. The immense practical and scientific interest in carbon nanostructures stems from their unique physical (mechanical, electrical, magnetic, optical and so on) [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] characteristics.…”

Section: Introductionmentioning

confidence: 99%

The heat capacity of nitrogen chain in grooves of single-walled carbon nanotube bundles

Bagatskii

Barabashko

Sumarokov

2013

Low Temperature Physics

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The heat capacity of bundles of closed-cap single-walled carbon nanotubes with one-dimensional chains of nitrogen molecules adsorbed in the grooves has been first experimentally studied at temperatures from 2 K to 40 K using an adiabatic calorimeter. The contribution of nitrogen C N2 to the total heat capacity has been separated. In the region 2 8 К the behavior of the curve C N2 (T) is qualitatively similar to the theoretical prediction of the phonon heat capacity of 1D chains of Kr atoms localized in the grooves of SWNT bundles. Below 3 К the dependence C N2 (Т) is linear. Above 8 К the dependence C N2 (Т) becomes steeper in comparison with the case of Kr atoms. This behavior of the heat capacity C N2 (Т) is due to the contribution of the rotational degrees of freedom of the N 2 molecules.

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Heat capacity of an electron gas at the surface of a nanotube with its superlattice in a magnetic field

Cited by 10 publications

References 18 publications

Semiconductor nanotube plasma

Semiconductor nanotube plasma

The Effect of Umklapp Processes on Magnetoplasma Waves on the Surface of a Semiconductor Nanotube with a Superlattice

The heat capacity of nitrogen chain in grooves of single-walled carbon nanotube bundles

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