88 citations · 186 across the 9 of their papers we have counts for
5 papers · 1 filter
Photoconductive gain in semiconductor quantum wires
K. -D. Hof, C. Rossler, S. Manus +4
We report on a photoconductive gain in semiconductor quantum wires which are lithographically defined in an AlGaAs/GaAs quantum well via a shallow-etch technique. The effect allows…
Hopping conduction in strongly insulating states of a diffusive bent quantum Hall junction
L. Steinke, D. Schuh, M. Bichler +2
Transport studies of a bent quantum Hall junction at integer filling factors show strongly insulating states at higher fields. In this paper we analyze the strongly insulating beha…
A new method to epitaxially grow long-range ordered self-assembled InAs quantum dots on (110) GaAs
J. Bauer, D. Schuh, E. Uccelli +5
We report on a new approach for positioning of self-assembled InAs quantum dots on (110) GaAs with nanometer precision. By combining self-assembly of quantum dots with molecular be…
Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
K. Muraki, J. G. S. Lok, S. Kraus +5
Magneto-drag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 a clear T^{4/3} dependence is observed, which signifies t…
Magnetization of a two-dimensional electron gas with a second filled subband
M. R. Schaapman, U. Zeitler, P. C. M. Christianen +5
We have measured the magnetization of a dual-subband two-dimensional electron gas, confined in a GaAs/AlGaAs heterojunction. In contrast to two-dimensional electron gases with a si…