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We have investigated the orbital magnetization of tunable two-dimensional electron-systems (2DES) in GaAs/AIGaAs-heterostructures in the magnetic quantum limit using a high-sensitive superconducting susceptometer. In particular we have studied the magnetiz ...
The aim of this work is the modelling of the effects of a pollutant on an organism including time as a variable. The model developed will permit the evaluation of the toxicity globally, at short or long term, for low or high concentrations. This approach w ...
The suprathermal electron cyclotron radiation is used to investigate fundamental phenomena governing electron tail formation during lower hybrid current drive (LHCD). To this end, an approximate analytical solution of the 2-D time-dependent Fokker-Planck e ...
We report on carrier-induced effects on emission and absorption in forward biased GaAs/AlGaAs V-groove quantum wire (QWR) diodes observed using low-temperature (10 K) photoluminescence (PL), electroluminescence (EL) and PL excitation (PLE) spectroscopy. In ...
Resistivity measurements are used to study vortex dynamics in a high quality superconducting YBa2Cu3O7-δ twinned single crystal. Nine gold contacts have been deposited on one sample surface, allowing us to perform different kinds of investigations. Firstly ...
Titanium-containing amorphous hydrogenated carbon films (a-C:H/Ti) have been deposited by a medium-frequency-driven physical vapor deposition plasma-enhanced chemical-vapor deposition process at 40 kHz. Core-level photoelectron spectroscopy and valence-ban ...
Leakage conduction of Pt-Pb(ZrXTi:(1-X))O-3-Pt capacitors is studied by means of different measuring techniques and analyzed in terms of semiconductor properties of the system. Based on the experimental data, it is concluded that two different regimes of c ...
Ammonia has been used to grow GaN layers by molecular beam epitaxy on c-plane sapphire substrates. The ratio of nitrogen to Ga active species, i.e., the actual V/III ratio, has been varied from 1 to 4. It is found that increasing the V/III ratio improves t ...
A special cryogenic press has been built to study the mechanical and electrical propel-ties of full-size ITER multistrand Nb3Sn cable-in-conduit conductor samples under transverse, mechanical loading. This simulates the transverse magnetic force that occur ...
A novel method of controlling light absorption by exciton-polaritons is presented. The coherent light-induced coupling of excitons in multiple quantum well Bragg structures is exploited to sup press dramatically the absorption. Our results show that excito ...
