Terahertz ratchet in graphene two-dimensional metamaterial formed by a patterned gate with an antidot array

I Yahniuk, M Hild, LE Golub, J Amann, J Eroms… - Physical Review B, 2024‏ - APS
We report the observation of the terahertz-induced ratchet effect in graphene-based two-
dimensional (2D) metamaterials. The metamaterial consists of a graphite gate patterned with …

Photocurrents induced by structured light

AA Gunyaga, MV Durnev, SA Tarasenko - Physical Review B, 2023‏ - APS
Advances in manipulating the structure of optical beams enable the study of interaction
between structured light and low-dimensional semiconductor systems. We explore the …

Terahertz photogalvanics in twisted bilayer graphene close to the second magic angle

M Otteneder, S Hubmann, X Lu, DA Kozlov… - Nano Letters, 2020‏ - ACS Publications
We report on the observation of photogalvanic effects in tBLG with a twist angle of 0.6°. We
show that excitation of the tBLG bulk causes a photocurrent, whose sign and magnitude are …

[HTML][HTML] Regulating Terahertz Photoconductivity in Two-Dimensional Materials

X **ng, Z Zhang, G Ma - Photonics, 2023‏ - mdpi.com
Two-dimensional materials represented by graphene have attracted extensive interest
owing to the unique layer-dependent physical properties that are tunable with various …

Terahertz photocurrent probe of quantum geometry and interactions in magic-angle twisted bilayer graphene

RK Kumar, G Li, R Bertini, S Chaudhary… - arxiv preprint arxiv …, 2024‏ - arxiv.org
Moir\'e materials represent strongly interacting electron systems bridging topological and
correlated physics. Despite significant advances, decoding wavefunction properties …

Superlinear Photogalvanic Effects in ((: Probing Three-Dimensional Topological Insulator Surface States at Room Temperature

SN Danilov, LE Golub, T Mayer, A Beer, S Binder… - Physical Review …, 2021‏ - APS
We report on the observation of a complex nonlinear intensity dependence of the circular
and linear photogalvanic currents induced by infrared radiation in compensated (Bi 0.3 Sb …

Nonlinear intensity dependence of edge photocurrents in graphene induced by terahertz radiation

S Candussio, LE Golub, S Bernreuter, T Jötten… - Physical Review B, 2021‏ - APS
We report on the observation of terahertz-radiation-induced edge photogalvanic currents in
graphene, which are nonlinear in intensity. The increase of the radiation intensities up to …

Photovoltaic Hall effect in the two-dimensional electron gas: Kinetic theory

MV Durnev - Physical Review B, 2021‏ - APS
We study theoretically transverse photoconductivity induced by circularly polarized radiation,
ie, the photovoltaic Hall effect, and linearly polarized radiation causing intraband optical …

Gate-controlled polarization-resolving mid-infrared detection at metal–graphene junctions

V Semkin, D Mylnikov, E Titova, S Zhukov… - Applied physics …, 2022‏ - pubs.aip.org
The ability to resolve the polarization of light with on-chip devices represents an urgent
problem in optoelectronics. The detectors with polarization resolution demonstrated so far …

Edge photogalvanic effect caused by optical alignment of carrier momenta in two-dimensional Dirac materials

MV Durnev, SA Tarasenko - Physical Review B, 2021‏ - APS
We show that the interband absorption of radiation in a two-dimensional (2D) Dirac material
leads to a direct electric current flowing at sample edges. The photocurrent originates from …