115 citations
- Imperial College LondonGB2 papers
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- Donostia International Physics CenterES1 paper
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- Jožef Stefan InstituteSI1 paper
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8 papers · 1 filter
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…
Effects of Zeeman spin splitting on the modular symmetry in the quantum Hall effect
D. R. Hang, R. B. Dunford, Gil-Ho Kim +7
Magnetic-field-induced phase transitions in the integer quantum Hall effect are studied under the formation of paired Landau bands arising from Zeeman spin splitting. By investigat…
Can the conductance of an adiabatic ballistic constriction be lower than ?
C. -T. Liang, O. A. Tkachenko, V. A. Tkachenko +4
We have performed four-terminal conductance measurements of a one-dimensional (1D) channel in which it is possible to modulate the potential profile using three overlaying finger g…
Quantum and Classical Dissipative Effects on Tunnelling in Quantum Hall Bilayers
Robert L. Jack, Derek K. K. Lee, Nigel R. Cooper
We discuss the interplay between transport and dissipation in quantum Hall bilayers. We show that quantum effects are relevant in the pseudospin picture of these systems, leading e…
Edge excitations and Topological orders in rotating Bose gases
M. A. Cazalilla, N. Barberan, N. R. Cooper
The edge excitations and related topological orders of correlated states of a fast rotating Bose gas are studied. Using exact diagonalization of small systems, we compute the energ…
Unusual conductance collapse in one-dimensional quantum structures
KJ Thomas, DL Sawkey, M Pepper +4
We report an unusual insulating state in one-dimensional quantum wires with a non-uniform confinement potential. The wires consist of a series of closely spaced split gates in high…