Search

Your search keyword '"R. Scheuerer"' showing total 2 results
Start Over Author "R. Scheuerer" Journal physica e: low-dimensional systems and nanostructures
2 results on '"R. Scheuerer"'

1. Miniband magneto-transport in GaAs/AlAs island superlattices

Author

P. C. Main, Amalia Patanè, Karl Friedrich Renk, A. Ignatov, R. Scheuerer, Mohamed Henini, Laurence Eaves, and Ekkehard Schomburg

Subjects
Elastic scattering, Quantitative Biology::Biomolecules, Materials science, Condensed matter physics, Superlattice, Physics::Optics, Electron, Gaas alas, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Condensed Matter::Materials Science, Monolayer, Anisotropy, Magneto, Electron scattering
Abstract

We study electron miniband magneto-transport in GaAs/AlAs superlattices with AlAs barriers of two monolayers. Here, the two-dimensional AlAs barrier comprises an in-plane distribution of AlAs islands. We use magneto-transport to probe both the rate and the anisotropy of the electron scattering associated with the islands.

Published
2002

2. InGaAs/InAlAs superlattice detector for THz radiation

Author

Karl Friedrich Renk, A. R. Kovsh, Ekkehard Schomburg, Florian Klappenberger, A Vollnhals, A. E. Zhukov, R. Scheuerer, V. M. Ustinov, and M. Kratschmer

Subjects
Physics, business.industry, Phonon, Infrared, Terahertz radiation, Superlattice, Detector, Direct current, Physics::Optics, Electron, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Bloch oscillations, Optoelectronics, business
Abstract

We report the use of an InGaAs/InAlAs superlattice for detection of THz radiation pulses generated by a free-electron-laser (FELIX). The detector showed a response corresponding to a reduction of the direct current through the superlattice. The current reduction is attributed to the THz-field induced modulation of Bloch oscillations performed by miniband electrons. The detector response was measured in a frequency range between 4 and 12 THz and showed strong minima at the frequencies of infrared active transverse optic phonons.

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results