Huge Photoresponse in the Nonlocal Transport Regime

URN to cite this document:: urn:nbn:de:bvb:355-epub-78719

Diessel, E. ; Müller, G. ; Weiss, Dieter ; Klitzing, Klaus von ; Ploog, K. ; Nickel, H. ; Schlapp, W. ; Lösch, R.

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Date of publication of this fulltext: 05 Aug 2009 13:57

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Abstract

We present experiments showing a significantly increased FIR photosensitivity of a high-mobility two-dimensional electron gas when transport in the quantum Hall regime is non-local, i.e. when scattering between adjacent edge channels is suppressed on macroscopic length scales. The resonant absorption under cyclotron resonance conditions enhances interedge channel scattering processes ...