364 citations · 2k across the 29 of their papers we have counts for
5 papers · 1 filter
Radio-frequency reflectometry on large gated 2-dimensional systems
L. J. Taskinen, R. P. Starrett, T. P. Martin +5
We have embedded an AlGaAs/GaAs based, gated 2D hole system (2DHS) into an impedance transformer circuit, and show that by using radio-frequency reflectometry it is possible t…
On the Zero-Bias Anomaly in Quantum Wires
S. Sarkozy, F. Sfigakis, K. Das Gupta +4
Undoped GaAs/AlGaAs heterostructures have been used to fabricate quantum wires in which the average impurity separation is greater than the device size. We compare the behavior of…
Spin-Incoherent Transport in Quantum Wires
W. K. Hew, K. J. Thomas, M. Pepper +4
When a quantum wire is weakly confined, a conductance plateau appears at e^2/h with decreasing carrier density in zero magnetic field accompanied by a gradual suppression of the 2e…
Low Temperature Transport in Undoped Mesoscopic Structures
S. Sarkozy, K. Das Gupta, C. Siegert +6
Using high quality undoped GaAs/AlGaAs heterostructures with optically patterned insulation between two layers of gates, it is possible to investigate very low density mesoscopic r…
Anomalous Coulomb drag in electron-hole bilayers
A. F. Croxall, K. Das Gupta, C. A. Nicoll +5
We report Coulomb drag measurements on GaAs-AlGaAs electron-hole bilayers. The two layers are separated by a 10 or 25nm barrier. Below T1K we find two features that a Ferm…