Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Vassilij Belkov"'
Autor:
Kathirn-Maria Dantscher, Johannes Ziegler, Dieter Weiss, S. Gebert, Mikhail V. Durnev, N. N. Mikhailov, M. T. Scherr, D. A. Kozlov, Sergey Tarasenko, Sergey Ganichev, Jan Bärenfänger, Vassilij Belkov, S. A. Dvoretsky, Z. D. Kvon
We report on the observation of a circular photogalvanic current excited by terahertz laser radiation in helical edge channels of two-dimensional (2D) HgTe topological insulators (TIs). The direction of the photocurrent reverses by switching the radi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d2739371493ed81583e4040771996c8
https://epub.uni-regensburg.de/35764/
https://epub.uni-regensburg.de/35764/
Autor:
Zbigniew Adamus, D. V. Fateev, G. Karczewski, Tomasz Wojtowicz, Jan Unverzagt, G. V. Budkin, E. L. Ivchenko, Stefan Hubmann, Vassilij Belkov, A. Pfaller, Sergey Ganichev, Vyacheslav V. Popov, Dieter Weiss, Leonid Golub, Philipp Faltermeier, D. A. Kozlov
This paper reports on the observation of the magnetic quantum ratchet effect in (Cd,Mn)Te- and CdTe-based quantum well structures with an asymmetric lateral dual grating gate superlattice subjected to an external magnetic field ($B$), applied normal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b1fe8c60e6ee9ac404eafb4eff3d112
https://epub.uni-regensburg.de/35763/
https://epub.uni-regensburg.de/35763/
Autor:
D. A. Kozlov, Leonid Golub, Sergey Ganichev, G. V. Budkin, G. Karczewski, Dieter Weiss, Philipp Faltermeier, Tomasz Wojtowicz, E. L. Ivchenko, Stefan Hubmann, Vassilij Belkov, Zbigniew Adamus
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. The effects are detected in (Cd,Mn)Te-based quantum well (QW) struct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f543a2bc1c67dbbe6c814aec0f1fcbc2
Autor:
A. K. Bakarov, P. Vierling, Vassilij Belkov, Sergey Danilov, Sergey Ganichev, A. I. Toropov, D. A. Kozlov, Sebastian Stachel, D. V. Dmitriev, Christina Zoth, Z. D. Kvon
Publikováno v:
JETP Letters. 97:41-44
The terahertz response of a high-density and high-mobility two-dimensional electron gas in 13-nm GaAs quantum wells at frequencies of 0.7 and 1.63 THz has been investigated. Terahertz radiation-induced magnetoresistance oscillations have been discove
Autor:
G. V. Budkin, Sergey Tarasenko, Kathirn-Maria Dantscher, D. A. Kozlov, Peter Olbrich, N. N. Mikhailov, Moritz Lindner, Vassilij Belkov, Christina Zoth, Z. D. Kvon, S. A. Dvoretsky, Bernd Jenichen, Dieter Weiss, Philipp Faltermeier, Sergey Ganichev
We report on the observation of cyclotron-resonance-induced photocurrents, excited by continuous wave terahertz radiation, in a three-dimensional topological insulator (TI) based on an 80-nm strained HgTe film. The analysis of the photocurrent format
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb53788591fea316897101b2a85ffc56
Autor:
Eougenious Ivchenko, M. Sollinger, D. Schowalter, Sergey Ganichev, Wilhelm Prettl, A.E. Zhukov, Vassilij Belkov, V. Ustinov, Sergey Tarasenko, Petra Schneider, Leonid E. Vorobjev
Publikováno v:
Journal of Superconductivity. 16:419-422
It is shown that absorption of circularly polarized infrared radiation achieved by inter-subband and intra-subband (Drude-like) transitions results in a monopolar spin orientation of free carriers. The monopolar spin polarization in zinc-blende-based
Autor:
Sergey Ganichev, Eougenious Ivchenko, Wilhelm Prettl, D. Schowalter, Vassilij Belkov, Richard Neumann, Karl Brunner, Gerhard Abstreiter, Petra Schneider, Ulrich Rössler
Publikováno v:
Journal of Superconductivity. 16:415-418
A detailed study of the circular photogalvanic effect (CPGE) in SiGe structures is presented. It is shown that the CPGE becomes possible because of the built-in asymmetry of quantum wells (QWs) in compositionally stepped samples and in asymmetrically
Autor:
M. Sollinger, Sergey Ganichev, Werner Wegscheider, D. Schowalter, Vassilij Belkov, Dieter Weiss, Wilhelm Prettl, Sergey Tarasenko, Eougenious Ivchenko
Publikováno v:
Journal of Superconductivity. 16:369-372
It is shown that a homogeneous nonequlibrium spin polarization in semiconductor heterostructures results in an electric current. The microscopic origin of the effect is an inherent asymmetry of spin-flip scattering in systems with lifted spin degener
Autor:
A. M. Gilbertson, Mikhail M. Glazov, Sergey Ganichev, Tim Ashley, G. V. Budkin, Steven Clowes, Sergey Tarasenko, Vassilij Belkov, Ursula Hagner, Sebastian Stachel
We report on the observation of the cyclotron-resonance-assisted photon drag effect. Resonant photocurrent is detected in InSb/InAlSb quantum wells structures subjected to a static magnetic field and excited by terahertz radiation at oblique incidenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d01730ea2fb0a8f933faf0a83baebb8
https://epub.uni-regensburg.de/31498/
https://epub.uni-regensburg.de/31498/
Autor:
Dieter Schuh, Tomasz Wojtowicz, Peter Olbrich, Sergey Ganichev, Christina Zoth, S. V. Ivanov, C. Drexler, A. N. Semenov, Ya. V. Terent’ev, Vassilij Belkov, Peter Lutz, Ursula Wurstbauer, Dmitri R. Yakovlev, Sergey Tarasenko
We report on the study of spin-polarized electric currents in diluted magnetic semiconductor (DMS) quantum wells subjected to an in-plane external magnetic field and illuminated by microwave or terahertz radiation. The effect is studied in (Cd,Mn)Te/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::988e870e7bee48c6f3dc36f419359c1d
http://arxiv.org/abs/1204.6163
http://arxiv.org/abs/1204.6163