54 citations · 202 across the 15 of their papers we have counts for
7 papers · 1 filter
Low-Temperature Collapse of Electron Localisation in Two Dimensions
M. Baenninger, A. Ghosh, M. Pepper +3
We report direct experimental evidence that the insulating phase of a disordered, yet strongly interacting two-dimensional electron system (2DES) becomes unstable at low temperatur…
Field-tunable magnetic phases in a semiconductor-based two-dimensional Kondo lattice
C. Siegert, A. Ghosh, M. Pepper +4
We show the existence of intrinsic localized spins in mesoscopic high-mobility GaAs/AlGaAs heterostructures. Non-equilibrium transport spectroscopy reveals a quasi-regular distribu…
Sensitivity of the magnetic state of a spin lattice on itinerant electron orbital phase
C. Siegert, A. Ghosh, M. Pepper +4
Spatially extended localized spins can interact via indirect exchange interaction through Friedel oscillations in the Fermi sea. In arrays of localized spins such interaction can l…
Experimental position-time entanglement with degenerate single photons
A. J. Bennett, D. G. Gevaux, Z. L. Yuan +3
We report an experiment in which two-photon interference occurs between degenerate single photons that never meet. The two photons travel in opposite directions through our fibre-o…
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…
Giant Fluctuations of Coulomb Drag in a Bilayer System
A. S. Price, A. K. Savchenko, B. N. Narozhny +2
We have observed reproducible fluctuations of the Coulomb drag, both as a function of magnetic field and electron concentration, which are a manifestation of quantum interference o…