Hydrodynamic approach to two-dimensional electron systems

BN Narozhny - La Rivista del Nuovo Cimento, 2022 - Springer
The last few years have seen an explosion of interest in hydrodynamic effects in interacting
electron systems in ultra-pure materials. One such material, graphene, is not only an …

Two-dimensional Dirac plasmon-polaritons in graphene, 3D topological insulator and hybrid systems

C In, UJ Kim, H Choi - Light: Science & Applications, 2022 - nature.com
Collective oscillations of massless particles in two-dimensional (2D) Dirac materials offer an
innovative route toward implementing atomically thin devices based on low-energy …

Experimental signatures of the transition from acoustic plasmon to electronic sound in graphene

D Barcons Ruiz, NCH Hesp, H Herzig Sheinfux… - Science …, 2023 - science.org
Fermi liquids respond differently to perturbations depending on whether their frequency is
higher (collisionless regime) or lower (hydrodynamic regime) than the interparticle collision …

Giant magnetoresistance of Dirac plasma in high-mobility graphene

N Xin, J Lourembam, P Kumaravadivel, AE Kazantsev… - Nature, 2023 - nature.com
The most recognizable feature of graphene's electronic spectrum is its Dirac point, around
which interesting phenomena tend to cluster. At low temperatures, the intrinsic behaviour in …

Viscous terahertz photoconductivity of hydrodynamic electrons in graphene

M Kravtsov, AL Shilov, Y Yang, T Pryadilin… - Nature …, 2024 - nature.com
Light incident upon materials can induce changes in their electrical conductivity, a
phenomenon referred to as photoresistance. In semiconductors, the photoresistance is …

Observation of negative effective thermal diffusion in gold films

A Block, R Yu, IW Un, S Varghese, M Liebel… - ACS …, 2023 - ACS Publications
Ultrafast light-induced spatiotemporal dynamics in metals in the form of electron and/or
phonon heating is a fundamental physical process that has tremendous practical relevance …

Generation of terahertz radiation via the transverse thermoelectric effect

P Yordanov, T Priessnitz, MJ Kim, G Cristiani… - Advanced …, 2023 - Wiley Online Library
Terahertz (THz) radiation is a powerful tool with widespread applications ranging from
imaging, sensing, and broadband communications to spectroscopy and nonlinear control of …

Charge carrier dynamics in 2D materials probed by ultrafast THzspectroscopy

E Cinquanta, EAA Pogna, L Gatto, S Stagira… - … in Physics: X, 2023 - Taylor & Francis
In this review, we discuss the rich ultrafast response at terahertz (THz) frequencies of two-
dimensional (2D) materials. Thanks to their unique optoelectronic properties and …

Interlayer electron-hole friction in tunable twisted bilayer graphene semimetal

DA Bandurin, A Principi, IY Phinney, T Taniguchi… - Physical Review Letters, 2022 - APS
Charge-neutral conducting systems represent a class of materials with unusual properties
governed by electron-hole (eh) interactions. Depending on the quasiparticle statistics, band …

Evidence for local spots of viscous electron flow in graphene at moderate mobility

S Samaddar, J Strasdas, K Janßen, S Just… - Nano Letters, 2021 - ACS Publications
Dominating electron–electron scattering enables viscous electron flow exhibiting
hydrodynamic current density patterns, such as Poiseuille profiles or vortices. The viscous …