Entropy wave instability in Dirac and Weyl semimetals

PO Sukhachov, EV Gorbar, IA Shovkovy - Physical Review Letters, 2021 - APS
… In the hydrodynamic regime, we neglect the intrinsic electric and thermal conductivities [15].
Therefore, the electric and energy current densities are proportional to fluid velocity u, …

Collective excitations in Weyl semimetals in the hydrodynamic regime

PO Sukhachov, EV Gorbar, IA Shovkovy… - Journal of Physics …, 2018 - iopscience.iop.org
… , we find that the frequencies of both diffusive and sound waves coincide with those in a
Dirac semimetal, see equations (25) and (26). In addition, there are also collective modes that …

[HTML][HTML] Chiral terahertz wave emission from the Weyl semimetal TaAs

Y Gao, S Kaushik, EJ Philip, Z Li, Y Qin, YP Liu… - Nature …, 2020 - nature.com
… We found that when the photon energy (ℏω) is tuned into the spectral regime that involves
excitation of the linear Weyl bands, the sheet photocurrent density will approach to the …

A Centimeter‐Scale Type‐II Weyl Semimetal for Flexible and Fast Ultra‐Broadband Photodetection from Ultraviolet to Sub‐Millimeter Wave Regime

Q Yang, X Wang, Z He, Y Chen, S Li… - Advanced …, 2023 - Wiley Online Library
… to the terahertz (THz) regime. However, large-area synthesis of vdW semimetals on a flexible
… In this study, centimeter-scale type-II vdW Weyl semimetal, T d -MoTe 2 films, are grown on …

Chiral magnetic waves in strongly coupled Weyl semimetals

M Baggioli, Y Liu, XM Wu - Journal of High Energy Physics, 2024 - Springer
semimetals using table-top experiments. By using a holographic model for strongly coupled
Weyl semimetals, … and estimate whether, and in which regimes, CMW could be observed as …

Chiral sound waves in strained Weyl semimetals

MN Chernodub, MAH Vozmediano - Physical Review Research, 2019 - APS
… of a Weyl semimetal supports another type of gapless excitation, the chiral sound wave (CSW).
It … 3, in the long-wavelength regime the velocity split becomes less pronounced, while the …

Four-wave mixing in Weyl semimetals

S Almutairi, Q Chen, M Tokman, A Belyanin - Physical Review B, 2020 - APS
Weyl semimetals (WSMs) have unusual optical responses originating from unique topological
properties of their bulk and surface electron states. Their third-order optical nonlinearity is …

Higher-order Weyl semimetals

SAA Ghorashi, T Li, TL Hughes - Physical review letters, 2020 - APS
… that a charge-density wave order can gap out the Weyl nodes and induce an insulating … 1
in a regime where we have two 2nd-order Weyl nodes located on the kz axis. It is known that …

Colossal magnetoresistance in the multiple wave vector charge density wave regime of an antiferromagnetic Dirac semimetal

R Singha, KJ Dalgaard, D Marchenko, M Krivenkov… - Science …, 2023 - science.org
Dirac semimetal CeSbTe demonstrates similar properties as the manganites. CeSb 0.11 Te
1.90 hosts multiple charge density wave … is an antiferromagnetic Dirac semimetal. Despite …

Theory of the strongly disordered Weyl semimetal

A Altland, D Bagrets - Physical Review B, 2016 - APS
… Our perhaps most striking finding is the identification of a regime … We show that this regime
plays a key role in understanding … [44] in connection with the theory of disordered 2D d-wave