Screening and plasma oscillations in an electron gas in the hydrodynamic approximation

Autor:	Kolomeisky, Eugene B., Straley, Joseph P.
Rok vydání:	2017
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Statistical Mechanics
Zdroj:	Phys. Rev. B 96, 165116 (2017)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.96.165116
Popis:	A hydrodynamic theory of screening in a generic electron gas of arbitrary dimensionality is given that encompasses all previously studied cases and clarifies the predictions of the many-body approach. We find that long-wavelength plasma oscillations are classical phenomena with quantum-mechanical effects playing no explicit role. The character of the oscillations is solely dictated by the dimensionality of the electron system and its equation of state in the neutral limit. Materials whose excitations are described by the Dirac dispersion law -- such as doped graphene or a Weyl semimetal -- are no exception to this rule. Comment: 5 pages, version to be published in Phys. Rev. B
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1706.02233 Zobrazit plný text záznamu View this record from Arxiv