101 citations · 369 across the 9 of their papers we have counts for
9 papers
Disentangling surface and bulk transport in topological-insulator - junctions
D. Backes, D. Huang, R. Mansell +7
By combining -type and -type topological insulators, vertically stacked - junctions can be formed, allowing to position the Ferm…
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…
Single- and few-electron dynamic quantum dots in a perpendicular magnetic field
S. J. Wright, A. L. Thorn, M. D. Blumenthal +9
We present experimental studies of the current pumped through a dynamic quantum dot over a wide range of magnetic fields. At low fields we observe repeatable structure indicating i…
Mesoscopic Fluctuations of Coulomb Drag of Composite Fermions
A. S. Price, A. K. Savchenko, D. A. Ritchie
We present the first experimental study of mesoscopic fluctuations of Coulomb drag in a system with two layers of composite fermions, which are seen when either the magnetic field…
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…
Enhanced spin relaxation time due to electron-electron scattering in semiconductors
W. J. H. Leyland, G. H. John, R. T. Harley +5
We present a detailed experimental and theoretical analysis of the spin dynamics of two-dimensional electron gases (2DEGs) in a series of n-doped GaAs/AlGaAs quantum wells. Picosec…
Hole-Hole Interaction Effect in the Conductance of the Two-Dimensional Hole Gas in the Ballistic Regime
Y. Y. Proskuryakov, A. K. Savchenko, S. S. Safonov +3
On a high mobility two-dimensional hole gas (2DHG) in a GaAs/GaAlAs heterostructure we study the interaction correction to the Drude conductivity in the ballistic regime, $k_BTτ/\h…
Weak localisation, hole-hole interactions and the "metal"-insulator transition in two dimensions
M. Y. Simmons, A. R. Hamilton, M. Pepper +4
A detailed investigation of the metallic behaviour in high quality GaAs-AlGaAs two dimensional hole systems reveals the presence of quantum corrections to the resistivity at low te…
The Aharonov-Bohm Effect in the Fractional Quantum Hall Regime
J. D. F. Franklin, I. Zailer, C. J. B. Ford +5
We have investigated experimentally resonant tunnelling through single-particle states formed around an antidot by a magnetic field, in the fractional quantum Hall regime. For 1/3…