Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Sergey Ganichev"'
Autor:
Paul Seifert, Kristina Vaklinova, Sergey Ganichev, Klaus Kern, Marko Burghard, Alexander W. Holleitner
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018)
While the spin generation in topological insulators is well studied, little is known about the interaction of the spins with external stimuli. Here, Seifert et al. observe a helical, bias-dependent photoconductance at the lateral edges of topological
Externí odkaz:
https://doaj.org/article/7bb4cc45d8fb46ba9c3010f622cd784b
Publikováno v:
JETP Letters. 113:466-470
A two-dimensional semimetal is discovered in the (013) HgTe quantum well with a thickness of d = 14 nm, which is much smaller than those previously studied. It is found that such semimetal is characterized by the same band overlap as the wells with d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8267bdc430f430018c8132cc281bcaff
https://doi.org/10.1134/s0021364021070110
https://doi.org/10.1134/s0021364021070110
Autor:
Xiaobo Lu, Sergey Ganichev, Kenji Watanabe, Stefan Hubmann, M. Otteneder, D. A. Kozlov, Leonid Golub, Takashi Taniguchi, Dmitri K. Efetov
Publikováno v:
Nano Letters. 20:7152-7158
We report on the observation of photogalvanic effects in twisted bilayer graphene (tBLG) with a twist angle of 0.6{\deg}. We show that excitation of tBLG bulk causes a photocurrent, whose sign and magnitude are controlled by orientation of the radiat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7da0cf8087044ab530d27758c1a5754d
https://doi.org/10.1021/acs.nanolett.0c02474
https://doi.org/10.1021/acs.nanolett.0c02474
Publikováno v:
Semiconductors. 54:465-470
The terahertz photoconductivity in epitaxial graphene grown on SiC substrates is investigated in a magnetic field. The magnetic-field dependence of the photoresponse signal amplitude is examined at different electron densities, bias currents, and ter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::520acb3d2f9884c2c2f5cc27b97329e0
https://doi.org/10.1134/s106378262004020x
https://doi.org/10.1134/s106378262004020x
Autor:
Sergey Ganichev, Pawel Prystawko, Grzegorz Cywiński, S. O. Potashin, Wojciech Knap, J. Lusakowski, Sergey Rumyantsev, V. Yu. Kachorovskii, D. Yavorskiy, Maria Szoła, P. Sai
Publikováno v:
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
We report THz induced ratchet photocurrent in AlGaN/GaN heterostructures superimposed with asymmetric dual-grating gate structure. The photocurrent shows giant magneto-oscillations in the regime of high magnetic fields. Peculiarly, the envelope of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99fa279f4bf4e69f6c2a69faa2207504
https://doi.org/10.1109/irmmw-thz50926.2021.9567574
https://doi.org/10.1109/irmmw-thz50926.2021.9567574
Autor:
Sergey A. Dvoretsky, I. Yahnuk, V. Kachorovskii, Jonas D. Ziegler, Dieter Weiss, Sergey Ganichev, Wojciech Knap, N. N. Mikhailov, M. Otteneder, Leonid Golub, A. S. Kazakov, Tomasz Dietl, G. V. Budkin
Publikováno v:
2021 46th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
We report on the observation of terahertz radiation induced ratchet effects in HgTe/HgCdTe-based quantum well (QWs) structures with a comb-like dual-grating-gate (DGG) structures. For investigations, we used various HgTe QWs with thickness of the 8.0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b7d10e4d4101f5980fc833d5d15d81e
https://doi.org/10.1109/irmmw-thz50926.2021.9567271
https://doi.org/10.1109/irmmw-thz50926.2021.9567271
Autor:
Jerzy Łusakowski, P. Sai, Pawel Prystawko, S. O. Potashin, Sergey Ganichev, Grzegorz Cywiński, Wojciech Knap, Sergey Rumyantsev, Maria Szoła, D. Yavorskiy, V. Yu. Kachorovskii
Publikováno v:
Physical Review B. 104
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 that irradiation of the superlattice with terahertz beam results in the d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48db631320f2b23883124d753dad8823
https://doi.org/10.1103/physrevb.104.045301
https://doi.org/10.1103/physrevb.104.045301
Autor:
M. G. Rybin, M. Moskotin, Sergey Ganichev, Georgy Fedorov, Vsevolod Belosevich, Yakov Matyushkin, Natalia Kaurova, V. Kachorovskii, Elena D. Obraztsova, Ilya V. Gorbenko, Sergey Danilov
Publikováno v:
Nano letters. 20(10)
Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in the terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene field effect transistor connected to speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::909598c034bcb7d7212557c4adb9797e
https://pubmed.ncbi.nlm.nih.gov/32903004
https://pubmed.ncbi.nlm.nih.gov/32903004
Autor:
J. Keil, Yaping Yang, Jun Yin, V. V. Bel'kov, Vladimir I. Fal'ko, Helene Plank, Seok-Kyun Son, Sergey Ganichev, Mikhail V. Durnev, S. A. Tarasenko, Artem Mishchenko, Sergey Slizovskiy, S. Candussio
Publikováno v:
Physical Review B
We report on the observation of edge electric currents excited in bilayer graphene by terahertz laser radiation. We show that the current generation belongs to the class of second order in electric field phenomena and is controlled by the orientation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c10943370003ad436c66931f56f4b79
https://epub.uni-regensburg.de/43602/
https://epub.uni-regensburg.de/43602/
Autor:
N. N. Mikhailov, V. G. Remesnik, V. S. Varavin, Stefan Hubmann, Wojciech Knap, S. A. Dvoretsky, M. Otteneder, D. A. Kozlov, G. V. Budkin, Dmytro B. But, I. Yahniuk, Sergey Ganichev, V. V. Bel'kov, Daniel Sacré, Sergey Tarasenko, K. Diendorfer
We report on the observation of symmetry breaking and the circular photogalvanic effect in ${\mathrm{Cd}}_{x}{\mathrm{Hg}}_{1\ensuremath{-}x}\mathrm{Te}$ alloys. We demonstrate that irradiation of bulk epitaxial films with circularly polarized terahe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97a8fc7c8cea9f62a8ed84b091f5a6c8
https://epub.uni-regensburg.de/43603/
https://epub.uni-regensburg.de/43603/