Plasmonic quantum nonlinear Hall effect in noncentrosymmetric 2D materials

Abstract

We investigate an interplay between quantum geometrical effects and surface plasmons through surface plasmonic structures, based on an electron hydrodynamic theory. First we demonstrate that the quantum nonlinear Hall effect can be dramatically enhanced over a very broad range of frequency by utilizing plasmonic resonances and near-field effects of grating gates. Under the resonant condition, the enhancement becomes several orders of magnitude larger than the case without the nanostructures, while the peaks of high-harmonic plasmons expand broadly and emerge under the off-resonant condition, leading to a remarkably broad spectrum. Furthermore, we clarify a universal relation between the photocurrent induced by the Berry curvature dipole and the optical absorption, which is essential for computational material design of long-wavelength photodetectors. Next we discuss a novel mechanism of geometrical photocurrent, which originates from an anomalous force induced by oscillating magnetic fields and is described by the dipole moment of orbital magnetic moments of Bloch electrons in the momentum space. Our theory is relevant to 2D quantum materials such as layered WTe${}_2$ and twisted bilayer graphene, thereby providing a promising route toward a novel type of highly sensitive, broadband terahertz photodetectors.

References in corpus (23)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• Graphene Plasmonics for Terahertz to Mid-Infrared Applications
• Graphene field effect transistors as room-temperature Terahertz detectors
• Nonlocal optical response in metallic nanostructures
• Hydrodynamics of electrons in graphene
• Hydrodynamic approach to two-dimensional electron systems
• Consistent Chiral Kinetic Theory in Weyl Materials: Chiral Magnetic Plasmons
• Electromagnetic properties of viscous charged fluids
• Berry phase mechanism for optical gyrotropy in stripe-ordered cuprates
• Hydrodynamic Model for Conductivity in Graphene
• Band theory of spatial dispersion in magnetoelectrics
• Electron hydrodynamics with a polygonal Fermi surface
• Hydrodynamic collective modes in graphene
• Anomalous Hydrodynamic Transport in Interacting Noncentrosymmetric Metals
• Collision dominated, ballistic, and viscous regimes of terahertz plasmonic detection by graphene
• Hydrodynamical study of Terahertz emission in magnetized graphene field-effect transistors
• Free electron nonlinearities in heavily doped semiconductors plasmonics
• Electron hydrodynamics of anomalous Hall materials
• Edge pseudo-magnetoplasmons
• Diffusion of photo-excited holes in viscous electron fluid
• Electrical plasmon detection in graphene waveguides
• Hydrodynamic effective field theories with discrete rotational symmetry
• Terahertz magneto-optical properties of graphene hydrodynamic electron liquid