In quadratic nodal line semimetals the long-wavelength plasmon frequency scales as n^{1/2}, while cubic nodal line semimetals show n^{2/3} at large doping and an RPA-derived n^{3/4} at small doping, with a common sqrt(2) anisotropy in the thin-ring limit.
Polarization, plasmon, and Debye screening in doped 3D ani-Weyl semimetal
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
We compute the polarization function in a doped three-dimensional anisotropic-Weyl semimetal, in which the fermion energy dispersion is linear in two components of the momenta and quadratic in the third. Through detailed calculations, we find that the long wavelength plasmon mode depends on the fermion density $n_e$ in the form $\Omega_{p}^{\bot}\propto n_{e}^{3/10}$ within the basal plane and behaves as $\Omega_{p}^{z}\propto n_{e}^{1/2}$ along the third direction. This unique characteristic of the plasmon mode can be probed by various experimental techniques, such as electron energy-loss spectroscopy. The Debye screening at finite chemical potential and finite temperature is also analyzed based on the polarization function.
citation-role summary
background 1
citation-polarity summary
fields
cond-mat.str-el 1years
2026 1verdicts
CONDITIONAL 1roles
background 1polarities
unclear 1representative citing papers
citing papers explorer
-
Plasmon modes in quadratic and cubic nodal line semimetals
In quadratic nodal line semimetals the long-wavelength plasmon frequency scales as n^{1/2}, while cubic nodal line semimetals show n^{2/3} at large doping and an RPA-derived n^{3/4} at small doping, with a common sqrt(2) anisotropy in the thin-ring limit.