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  • Title: Observation of edge transport in the disordered regime of topologically insulating InAs/GaSb quantum wells.
    Author: Knez I, Rettner CT, Yang SH, Parkin SS, Du L, Du RR, Sullivan G.
    Journal: Phys Rev Lett; 2014 Jan 17; 112(2):026602. PubMed ID: 24484034.
    Abstract:
    We observe edge transport in the topologically insulating InAs/GaSb system in the disordered regime. Using asymmetric current paths we show that conduction occurs exclusively along the device edge, exhibiting a large Hall signal at zero magnetic fields, while for symmetric current paths, the conductance between the two mesoscopicly separated probes is quantized to 2e2/h. Both quantized and self-averaged transport show resilience to magnetic fields, and are temperature independent for temperatures between 20 mK and 1 K.
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