4 papers · 1 filter
Energy-level pinning and the 0.7 spin state in one dimension: GaAs quantum wires studied using finite-bias spectroscopy
A. C. Graham, D. L. Sawkey, M. Pepper +2
We study the effects of electron-electron interactions on the energy levels of GaAs quantum wires (QWs) using finite-bias spectroscopy. We probe the energy spectrum at zero magneti…
Anomalous spin-dependent behaviour of one-dimensional subbands
A. C. Graham, M. Pepper, M. Y. Simmons +1
We report a new electron interaction effect in GaAs/AlGaAs quantum wires. Using DC-bias spectroscopy, we show that large and abrupt changes occur to the energies of spin-down (lowe…
Hyperfine effects in quantum wires
D. L. Sawkey, K. J. Thomas, M. Pepper +5
This paper has been removed.
Interaction Effects at Crossings of Spin-Polarised One-Dimensional Subbands
A. C. Graham, K. J. Thomas, M. Pepper +3
We report conductance measurements of ballistic one-dimensional (1D) wires defined in GaAs/AlGaAs heterostructures in an in-plane magnetic field, B. When the Zeeman energy is equal…