Insulating state and giant non-local response in an InAs/GaSb quantum well in the quantum Hall regime
Pal, Atindra Nath
- Working Paper
We present transport measurements performed in InAs/GaSb double quantum wells. At the electron-hole crossover tuned by a gate voltage, a strong increase in the longitudinal resistivity is observed with increasing perpendicular magnetic field. Concomitantly with a local resistance exceeding the resistance quantum by an order of magnitude, we find a pronounced non-local resistance signal of almost similar magnitude. The co-existence of these two effects is reconciled in a model of counter-propagating and dissipative quantum Hall edge channels providing backscattering, shorted by a residual bulk conductivity Show more
Journal / seriesarXiv
Organisational unit03439 - Ensslin, Klaus
NotesSubmitted on 14 August 2013, Last revised 19 December 2013. See also http://e-citations.ethbib.ethz.ch/view/pub:155724.
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