124 citations · 291 across the 8 of their papers we have counts for
8 papers
Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers
L. Tiemann, J. G. S. Lok, W. Dietsche +4
Magneto-transport and drag measurements on a quasi-Corbino 2D electron bilayer at the systems total filling factor 1 (v_tot=1) reveal a drag voltage that is equal in magnitude to t…
Electron spin resonance on a 2-dimensional electron gas in a single AlAs quantum well
M. Schulte, J. G. S. Lok, G. Denninger +1
Direct electron spin resonance (ESR) on a high mobility two dimensional electron gas in a single AlAs quantum well reveals an electronic -factor of 1.991 at 9.35 GHz and 1.989 a…
Activated Transport in the individual Layers that form the =1 Exciton Condensate
R. D. Wiersma, J. G. S. Lok, S. Kraus +6
We observe the total filling factor =1 quantum Hall state in a bilayer two-dimensional electron system with virtually no tunnelling. We find thermally activated transport in…
Coulomb Drag as a Probe of the Nature of Compressible States in a Magnetic Field
K. Muraki, J. G. S. Lok, S. Kraus +5
Magneto-drag reveals the nature of compressible states and the underlying interplay of disorder and interactions. At ν=3/2 a clear T^{4/3} dependence is observed, which signifies t…
Closely spaced and separately contacted 2d electron and 2d hole gases by in situ focussed ion implantation
M. Pohlt, M. Lynass, J. G. S. Lok +4
Separately contacted double layers of a 2d electron - 2d hole gases have been prepared in GaAs separated by thin AlGaAs barriers with thicknesses down to 15 nm. The molecular-beam-…
Comment on 'Missing 2 Response for Composite Fermions in Phonon Drag'
U. Zeitler, J. G. S. Lok
A Comment on the Letter by S. Zelakiewicz et al., Phys. Rev. Lett. 85, 1942 (2000).