Terahertz detection based on nonlinear Hall effect without magnetic field

Y Zhang, L Fu - Proceedings of the National Academy of …, 2021 - National Acad Sciences
We propose a method for broadband long-wavelength photodetection using the nonlinear
Hall effect in noncentrosymmetric quantum materials. The inherently quadratic relation …

Terahertz Nonlinear Hall Rectifiers Based on Spin‐Polarized Topological Electronic States in 1T‐CoTe2

Z Hu, L Zhang, A Chakraborty, G D'Olimpio… - Advanced …, 2023 - Wiley Online Library
The zero‐magnetic‐field nonlinear Hall effect (NLHE) refers to the second‐order transverse
current induced by an applied alternating electric field; it indicates the topological properties …

Strong room-temperature bulk nonlinear Hall effect in a spin-valley locked Dirac material

L Min, H Tan, Z Xie, L Miao, R Zhang, SH Lee… - Nature …, 2023 - nature.com
Nonlinear Hall effect (NLHE) is a new type of Hall effect with wide application prospects.
Practical device applications require strong NLHE at room temperature (RT). However …

A tunable room-temperature nonlinear Hall effect in elemental bismuth thin films

P Makushko, S Kovalev, Y Zabila, I Ilyakov… - Nature …, 2024 - nature.com
The nonlinear Hall effect with time-reversal symmetry is a second-order electronic transport
phenomenon—seen as a quadratic voltage transverse to an applied electric field—that …

Low-frequency divergence and quantum geometry of the bulk photovoltaic effect in topological semimetals

J Ahn, GY Guo, N Nagaosa - Physical Review X, 2020 - APS
We study the low-frequency properties of the bulk photovoltaic effect in topological
semimetals. The bulk photovoltaic effect is a nonlinear optical effect that generates dc …

Giant photon momentum locked THz emission in a centrosymmetric Dirac semimetal

L Cheng, Y Xiong, L Kang, Y Gao, Q Chang… - Science …, 2023 - science.org
Strong second-order optical nonlinearities often require broken material centrosymmetry,
thereby limiting the type and quality of materials used for nonlinear optical devices. Here, we …

PtTe2‐Based Type‐II Dirac Semimetal and Its van der Waals Heterostructure for Sensitive Room Temperature Terahertz Photodetection

H Xu, C Guo, J Zhang, W Guo, CN Kuo, CS Lue, W Hu… - Small, 2019 - Wiley Online Library
Recent years have witnessed rapid progresses made in the photoelectric performance of
two‐dimensional materials represented by graphene, black phosphorus, and transition …

Room-temperature nonlinear Hall effect and wireless radiofrequency rectification in Weyl semimetal TaIrTe4

D Kumar, CH Hsu, R Sharma, TR Chang, P Yu… - Nature …, 2021 - nature.com
The nonlinear Hall effect (NLHE), the phenomenon in which a transverse voltage can be
produced without a magnetic field, provides a potential alternative for rectification or …

Quantum nonlinear Hall effect induced by Berry curvature dipole in time-reversal invariant materials

I Sodemann, L Fu - Physical review letters, 2015 - APS
It is well known that a nonvanishing Hall conductivity requires broken time-reversal
symmetry. However, in this work, we demonstrate that Hall-like currents can occur in second …

Thickness-controlled three-dimensional Dirac semimetal for scalable high-performance terahertz optoelectronics

X Yao, S Zhang, Q Sun, P Chen, X Zhang… - ACS …, 2021 - ACS Publications
The advent of topological semimetals with peculiar band structure and exotic transport
provides an unprecedented material platform that allows exploring novel optoelectronics for …