144 citations · 592 across the 11 of their papers we have counts for
11 papers
High-frequency rectification in graphene lateral p-n junctions
Yu. B. Vasilyev, G. Yu. Vasileva, S. Novikov +3
We observe a dc electric current in response to terahertz radiation in lateral inter-digitated double-comb graphene p-n junctions. The junctions were fabricated by selective ultrav…
Room temperature high frequency transport of Dirac fermions in epitaxially grown Sb_2Te_3 based topological insulators
P. Olbrich, L. E. Golub, T. Herrmann +11
We report on the observation of photogalvanic effects in epitaxially grown Sb_2Te_3 three-dimensional (3D) topological insulators (TI). We show that asymmetric scattering of Dirac…
Magneto-Photoluminescence of InAs/InGaAs/InAlAs quantum well structures
Ya. V. Terent'ev, S. N. Danilov, J. Loher +8
Photoluminescence (PL) and highly circularly-polarized magneto-PL (up to 50% at 6 T) from two-step bandgap InAs/InGaAs/InAlAs quantum wells (QWs) are studied. Bright PL is observed…
Helicity-dependent photocurrents in graphene layers excited by mid-infrared radiation of a CO-laser
Chongyun Jiang, V. A. Shalygin, V. Yu. Panevin +6
We report the study of the helicity driven photocurrents in graphene excited by mid-infrared light of a CO-laser. Illuminating an unbiased monolayer sheet of graphene with circ…
Circular photogalvanic effect in HgTe/CdHgTe quantum well structures
B. Wittmann, S. N. Danilov, V. V. Bel'kov +12
We describe the observation of the circular and linear photogalvanic effects in HgTe/CdHgTe quantum wells. The interband absorption of mid-infrared radiation as well as the intrasu…
Ratchet effects induced by terahertz radiation in heterostructures with a lateral periodic potential
P. Olbrich, E. L. Ivchenko, T. Feil +5
We report on the observation of terahertz radiation induced photogalvanic currents in semiconductor heterostructures with one-dimensional lateral periodic potential. The potential…