407 citations · 2.8k across the 67 of their papers we have counts for
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Nonlinear intensity dependence of ratchet currents induced by terahertz laser radiation in bilayer graphene with asymmetric periodic grating gates
Erwin Mönch, Stefan Hubmann, Ivan Yahniuk +9
We report on the observation of a nonlinear intensity dependence of the terahertz radiation induced ratchet effects in bilayer graphene with asymmetric dual grating gate lateral la…
Terahertz spin ratchet effect in magnetic metamaterials
M. Hild, L. E. Golub, A. Fuhrmann +10
We report on spin ratchet currents driven by terahertz radiation electric fields in a Co/Pt magnetic metamaterial formed by triangle-shaped holes forming an antidots lattice and su…
Ratchet effect in spatially modulated bilayer graphene: Signature of hydrodynamic transport
Erwin Mönch, Sergey O. Potashin, Katja Lindner +10
We report on the observation of the ratchet effect -- generation of direct electric current in response to external terahertz (THz) radiation -- in bilayer graphene, where inversio…
Cyclotron resonance overtones and near-field magnetoabsorption via terahertz Bernstein modes in graphene
D. A. Bandurin, E. Mönch, K. Kapralov +8
Two-dimensional electron systems subjected to a perpendicular magnetic field absorb electromagnetic radiation via the cyclotron resonance (CR). Here we report a qualitative breach…
Edge photocurrent in bilayer graphene due to inter-Landau-level transitions
S. Candussio, M. V. Durnev, S. Slizovskiy +9
We report the observation of the resonant excitation of edge photocurrents in bilayer graphene subjected to terahertz radiation and a magnetic field. The resonantly excited edge ph…
Terahertz photoresistivity of a high-mobility 3D topological insulator based on a strained HgTe film
M. L. Savchenko, M. Otteneder, I. A. Dmitriev +3
We report on a detailed study of the terahertz (THz) photoresistivity in a strained HgTe three-dimensional topological insulator (3D TI) for all Fermi level positions: inside the c…
Helicity sensitive plasmonic teraherts interferometer
Y. Matyushkin, S. Danilov, M. Moskotin +8
Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in terahertz frequency range. In this Letter, we explore a plasmonic interfero…
Terahertz photogalvanics in twisted bilayer graphene close to the second magic angle
M. Otteneder, S. Hubmann, X. Lu +6
We report on the observation of photogalvanic effects in twisted bilayer graphene (tBLG) with a twist angle of 0.6°. We show that excitation of tBLG bulk causes a photocurrent, who…
Edge photocurrent driven by THz electric field in bi-layer graphene
S. Candussio, M. V. Durnev, S. A. Tarasenko +10
We report on the observation of edge electric currents excited in bi-layer graphene by terahertz laser radiation. We show that the current generation belongs to the class of second…
Observation of terahertz-induced magnetooscillations in graphene
Erwin Mönch, Denis A. Bandurin, Ivan A. Dmitriev +6
When high-frequency radiation is incident upon graphene subjected to a perpendicular magnetic field, graphene absorbs incident photons by allowing transitions between nearest LLs t…
Impact ionization induced by terahertz radiation in HgTe quantum wells of critical thickness
S. Hubmann, G. V. Budkin, M. Urban +9
We report on the observation of terahertz (THz) radiation induced band-to-band impact ionization in \HgTe quantum well (QW) structures of critical thickness, which are characterize…
Symmetry breaking and circular photogalvanic effect in epitaxial CdHgTe films
S. Hubmann, G. V. Budkin, M. Otteneder +13
We report on the observation of symmetry breaking and the circular photogalvanic effect in CdHgTe alloys. We demonstrate that irradiation of bulk epitaxial films with c…
High frequency impact ionization and nonlinearity of photocurrent induced by intense terahertz radiation in HgTe-based quantum well structures
S. Hubmann, G. V. Budkin, A. P. Dmitriev +10
We report on a strong nonlinear behavior of the photogalvanics and photoconductivity under excitation of HgTe quantum wells (QWs) by intense terahertz (THz) radiation. The increasi…
Sign-alternating photoconductivity and magnetoresistance oscillations induced by terahertz radiation in HgTe quantum wells
M. Otteneder, I. A. Dmitriev, S. Candussio +7
We report on the observation of terahertz radiation induced photoconductivity and of terahertz analog of the microwave-induced resistance oscillations (MIRO) in HgTe-based quantum…
Edge currents driven by terahertz radiation in graphene in quantum Hall regime
H. Plank, M. V. Durnev, S. Candussio +9
We observe that the illumination of unbiased graphene in the quantum Hall regime with polarized terahertz laser radiation results in a direct edge current. This photocurrent is cau…
Giant terahertz photoconductance of tunneling point contacts
M. Otteneder, Z. D. Kvon, O. A. Tkachenko +5
We report on the observation of the giant photoconductance of a quantum point contact (QPC) in tunneling regime excited by terahertz radiation. Studied QPCs are formed in a GaAs/Al…
Spin-dependent photogalvanic effects (A Review)
E. L. Ivchenko, S. D. Ganichev
In this paper we review both theoretical and experimental studies on spin-related photogalvanic effects. A short phenomenological introduction is followed by the discussion of the…
Terahertz electric field driven electric currents and ratchet effects in graphene
Sergey D. Ganichev, Dieter Weiss, Jonathan Eroms
Terahertz field induced photocurrents in graphene were studied experimentally and by microscopic modeling. Currents were generated by cw and pulsed laser radiation in large area as…
Circular and linear magnetic quantum ratchet effects in dual-grating-gate CdTe-based nanostructures
P. Faltermeier, G. V. Budkin, S. Hubmann +9
We report on the observation and systematic study of polarization sensitive magnetic quantum ratchet effects induced by alternating electric fields in the terahertz frequency range…
Spin Hall photoconductance in a 3D topological insulator at room temperature
Paul Seifert, Kristina Vaklinova, Sergey Ganichev +3
Three-dimensional topological insulators are a class of Dirac materials, wherein strong spin-orbit coupling leads to two-dimensional surface states. The latter feature spin-momentu…
Magneto-resistance oscillations induced by high-intensity terahertz radiation
T. Herrmann, Z. D. Kvon, I. A. Dmitriev +12
We report on observation of pronounced terahertz radiation-induced magneto-resistivity oscillations in AlGaAs/GaAs two-dimensional electron systems, the THz analog of the microwave…
Photogalvanic probing of helical edge channels in 2D HgTe topological insulators
K. -M. Dantscher, D. A. Kozlov, M. T. Scherr +10
We report on the observation of a circular photogalvanic current excited by terahertz (THz) laser radiation in helical edge channels of HgTe-based 2D topological insulators (TIs).…
Opto-Electronic Characterization of Three Dimensional Topological Insulators
Helene Plank, Sergey N. Danilov, Vasily V. Bel'kov +6
We demonstrate that the terahertz/infrared radiation induced photogalvanic effect, which is sensitive to the surface symmetry and scattering details, can be applied to study the hi…
Noncentrosymmetric plasmon modes and giant terahertz photocurrent in a two-dimensional plasmonic crystal
V. V. Popov, D. V. Fateev, E. L. Ivchenko +1
We introduce and theoretically study the plasmon-photogalvanic effect in the planar noncentrosymmetric plasmonic crystal containing a homogeneous two-dimensional electron system ga…