Zobrazeno 1 - 10
of 208
pro vyhledávání: '"G. Nachtwei"'
Autor:
Dmitry Smirnov, G. Yu. Vasileva, Hennrik Schmidt, Rolf J. Haug, P. S. Alekseev, G. Nachtwei, Yu. B. Vasil'ev, F. Gouider, Yu. L. Ivanov
Publikováno v:
JETP Letters. 96:471-474
The magnetoresistance of single-layer graphene on a Si/SiO2 substrate is measured in the temperature range of 2.5–150 K. It is found that, at high enough temperatures and away from the Dirac point, the resistance varies as the square root of the ma
The Hall effect and the Shubnikov-de Haas effect of a quasi-two-dimensional inversion layer adjacent to grain boundaries in InSb and Hg0.23Cd0.77Te bicrystals are investigated in magnetic fields up to 14.5 T, temperatures down to 0.4 K and at differe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c19b5a8e01fa9b4c5f8b3dc5cb287a
https://doi.org/10.1088/0268-1242/8/1s/038
https://doi.org/10.1088/0268-1242/8/1s/038
Publikováno v:
Semiconductors. 46:655-658
Terahertz photoconductivity in magnetic fields in semimetallic HgTe/CdHgTe quantum wells has been studied. The main contribution to photoconductivity comes from a signal that appears as a result of electron-gas heating. It is shown that, with the cyc
Publikováno v:
Semiconductors. 44:1511-1514
The absorption of two-dimensional electrons in InSb-based quantum wells in the quantized magnetic fields in the terahertz spectral region are studied. A p-Ge-based cyclotron laser was used as the radiation source. The effective mass of carriers at th
Publikováno v:
Journal of Low Temperature Physics. 159:184-188
We investigated the magnetoconductivity and the Terahertz (THz) photo-conductivity of devices with HgTe quantum wells embedded in barrier layers of HgCdTe. For the photoconductivity measurements, a THz laser system (p-Ge-Laser) is applied. This laser
Publikováno v:
International Journal of Modern Physics B. 23:2915-2921
A novel photocurrent effect induced by Terahertz (THz) radiation in two-dimensional (2D) electron systems is reported. It was found that when the system is tuned to electron cyclotron resonance conditions, THz radiation induces a visible signal relat
Publikováno v:
physica status solidi (b). 245:331-335
We have studied the onset of dissipation in quantum Hall systems (QHSs), patterned in various geometries (Hall bars, meanders and Corbino rings) from wafers with heterojunctions (GaAs/GaAlAs) and HgTe quantum wells with adjacent HgCdTe barriers. The
Publikováno v:
Semiconductor Science and Technology. 21:1714-1719
In this study, we have investigated the time scale of the excitation of electrons leading to a transition from the quantum Hall (QH) state to the dissipative state in the two-dimensional electron system (2DES) of GaAs/AlGaAs heterostructures with Cor
Publikováno v:
physica status solidi c. 3:2510-2513
We present measurements of the THz photoconductivity on different quantum Hall systems. GaAs/AlGaAs and HgTe/HgCdTe (MCT) heterostructures with Hall-bar and Corbino geometry are investigated. A recipe for the preparation of metallic Corbino contacts
Publikováno v:
Journal of Nanoelectronics and Optoelectronics. 1:82-85