18 citations · 143 across the 17 of their papers we have counts for
17 papers
Chirality Driven Ratchet Currents in Two-Dimensional Tellurene with an Asymmetric Grating
M. D. Moldavskaya, L. E. Golub, Chang Niu +2
The emergence of the terahertz (THz) ratchet effect is a rapidly expanding field of research that utilizes broken spatial symmetry in low-dimensional materials to rectify alternati…
Bleaching of the Terahertz Magneto-Photogalvanic Effect in CdHgTe Crystals with Kane Fermions
M. D. Moldavskaya, L. E. Golub, V. V. Bel'kov +4
We report the observation and comprehensive study of the complex nonlinear intensity dependence of the magneto-photogalvanic effect (MPGE) current induced by terahertz (THz) radiat…
Magnetophotogalvanic Effects Driven by Terahertz Radiation in CdHgTe Crystals with Kane Fermions
M. D. Moldavskaya, L. E. Golub, V. V. Bel'kov +10
We report on the observation and comprehensive study of the terahertz radiation induced magneto-photogalvanic effect (MPGE) in bulk CdHgTe crystals hosting Kane fermions. The MPGE…
Circular THz ratchets in a 2D-modulated Dirac system
M. Hild, I. Yahniuk, L. E. Golub +6
We report on the observation of the circular ratchet effect excited by terahertz laser radiation in a specially designed two-dimensional metamaterial consisting of a graphene monol…
Terahertz ratchet in graphene 2D metamaterial formed by a patterned gate with an antidot arrayd
I. Yahniuk, M. Hild, L. E. Golub +8
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 in bulk tellurium
M. D. Moldavskaya, L. E. Golub, S. N. Danilov +3
We report a comprehensive study of polarized infrared/terahertz photocurrents in bulk tellurium crystals. We observe different photocurrent contributions and show that, depending o…
Current-induced enhancement of photo-response in graphene THz radiation detectors
K. Indykiewicz, C. Bray, C. Consejo +4
Thermoelectric readout in a graphene THz radiation detector requires a p-n junction across the graphene channel. Even without an intentional p-n junction, two latent junctions can…
Temperature Dependent Zero-Field Splittings in Graphene
C. Bray, K. Maussang, C. Consejo +15
Graphene is a quantum spin Hall insulator with a 45 eV wide non-trivial topological gap induced by the intrinsic spin-orbit coupling. Even though this zero-field spin splitting…
Demonstration of high sensitivity of microwave-induced resistance oscillations to circular polarization
M. L. Savchenko, A. Shuvaev, I. A. Dmitriev +3
We demonstrate that long-debated immunity of microwave-induced resistance oscillations (MIRO) to the sense of circular polarization is not a generic property of this phenomenon in…
Circular polarization immunity of the cyclotron resonance photoconductivity in two-dimensional electron systems
Erwin Mönch, Philipp Euringer, Georg-Maximilian Hüttner +7
Studying the cyclotron resonance (CR)-induced photoconductivity in GaAs and HgTe two-dimensional electron structures, we observed an anomalous photoresponse for the CR-inactive geo…
THz ratchet effect in HgTe interdigitated structures
I. Yahniuk, G. V. Budkin, A. Kazakov +9
The emergence of ratchet effects in two-dimensional materials is strongly correlated with the introduction of asymmetry into the system. In general, dual-grating-gate structures fo…
THz radiation induced circular Hall effect in graphene
S. Candussio, S. Bernreuter, T. Rockinger +6
We report on the observation of the circular transversal terahertz photoconductivity in monolayer graphene supplied by a back gate. The photoconductivity response is caused by the…
Nonlinear intensity dependence of photogalvanics and photoconductance induced by terahertz laser radiation in twisted bilayer graphene close to magic angle
S. Hubmann, P. Soul, G. Di Battista +5
We report on the observation of the nonlinear intensity dependence of the bulk photogalvanic current and photoconductivity in the twisted graphene with small twist angles close to…
Highly Superlinear Giant Terahertz Photoconductance in GaAs Quantum Point Contacts in the Deep Tunneling Regime
M. Otteneder, M. Hild, Z. D. Kvon +3
A highly superlinear in radiation intensity photoconductance induced by terahertz laser radiation with moderate intensities has been observed in quantum point contacts made of GaAs…
Nonlinear intensity dependence of terahertz edge photocurrents in graphene
S. Candussio, L. E. Golub, S. Bernreuter +7
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…
Beatings of ratchet current magneto-oscillations in GaN-based grating gate structures: manifestation of spin-orbit band splitting
P. Sai, S. O. Potashin, M. Szola +8
We report on the study of the magnetic ratchet effect in AlGaN/GaN heterostructures superimposed with lateral superlattice formed by dual-grating gate structure. We demonstrate tha…
Terahertz Magnetospectroscopy of Cyclotron Resonances from Topological Surface States in Thick Films of CdHgTe
M. Otteneder, D. Sacré, I. Yahniuk +10
We present studies of the cyclotron resonance (CR) in thick CdHgTe films with different cadmium concentrations corresponding to inverted and normal band order, as well…