Viscoelastic response and anisotropic hydrodynamics in Weyl semimetals

Autor:	Herasymchuk, A. A., Gorbar, E. V., Sukhachov, P. O.
Rok vydání:	2024
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons High Energy Physics - Phenomenology
Zdroj:	Phys. Rev. B 110, 035133 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.110.035133
Popis:	We study viscoelastic response in Weyl semimetals with broken time-reversal symmetry. The principal finding is that topology and anisotropy of the Fermi surface are manifested in the viscoelasticity tensor of the electron fluid. In the dynamic (interband) part of this tensor, the anisotropy leads to a qualitatively different, compared with isotropic models, scaling with frequency and the Fermi energy. The components of the viscosity tensor determined by the Fermi-surface properties agree in the Kubo and kinetic formalisms; the latter, however, misses the anomalous Hall viscosity originating from filled states below the Fermi surface. The anisotropy of the dispersion relation is also manifested in the acceleration and relaxation terms of the hydrodynamic equations providing means to probe the anisotropy in transport experiments. Comment: 10+19 pages, 4 figures; published version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2402.19304 Zobrazit plný text záznamu View this record from Arxiv