29 citations · 108 across the 8 of their papers we have counts for
9 papers
Landau Level Single-Electron Pumping
E. Pyurbeeva, M. D. Blumenthal, J. A. Mol +5
We present the first detailed study of the effect of a strong magnetic field on single-electron pumping in a device utilising a finger-gate split-gate configuration. In the quantum…
Low frequency resistance fluctuations in an ionic liquid gated channel probed by cross-correlation noise spectroscopy
Bikash C. Barik, Himadri Chakraborti, Aditya K. Jain +4
A system in equilibrium keeps ``exploring" nearby states in the phase space and consequently, fluctuations can contain information, that the mean value does not. However, such meas…
Statistical study of conductance properties in one-dimensional quantum wires focussing on the 0.7 anomaly
L. W. Smith, H. Al-Taie, F. Sfigakis +9
The properties of conductance in one-dimensional (1D) quantum wires are statistically investigated using an array of 256 lithographically-identical split gates, fabricated on a GaA…
A low-temperature device architecture for the statistical study of electrical characteristics of 256 quantum devices
H. Al-Taie, L. W. Smith, B. Xu +7
Research in the field of low-temperature electronics is limited by the small number of electrical contacts available on cryogenic set ups. This not only restricts the number of dev…
High-contrast Aharonov-Bohm oscillations in the acoustoelectric transport regime
E. Strambini, E. Ligarò, F. Beltram +4
Phase-coherent acoustoelectric transport is reported.Aharonov-Bohm oscillations in the acoustoelectric current with visibility exceeding 100% were observed in mesoscopic GaAs rings…
Evidence of Novel Quasiparticles in a Strongly Interacting Two-Dimensional Electron System: Giant Thermopower and Metallic Behaviour
Vijay Narayan, M. Pepper, J. Griffths +5
We report thermopower () and electrical resistivity () measurements in low-density (10 m), mesoscopic two-dimensional electron systems (2DESs) in GaAs/Al…
Distinguishing impurity concentrations in GaAs and AlGaAs, using very shallow undoped heterostructures
W. Y. Mak, K. Das Gupta, H. E. Beere +3
We demonstrate a method of making a very shallow, gateable, undoped 2-dimensional electron gas. We have developed a method of making very low resistivity contacts to these structur…
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…
High-performance planar light-emitting diode
Marco Cecchini, Vincenzo Piazza, Fabio Beltram +5
Planar light-emitting diodes (LEDs) fabricated within a single high-mobility quantum well are demonstrated. Our approach leads to a dramatic reduction of radiative lifetime and jun…