Nachtwei, G and Lütjering, G and Weiss, Dieter and Liu, Z and Klitzing, K and Foxon, C (1997) Breakdown of the Quantum Hall Effect in Periodic and Aperiodic Antidot Arrays. Physical Review B 55, p. 6731.
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We have studied the breakdown of the quantum Hall effect in GaAs/AlxGa1-xAs heterostructures with antidot arrays as a function of the density and distribution of antidots. For periodic arrays (lithographic antidot diameter 100 nm) and periods from 400 to 1000 nm, the breakdown current is systematically reduced with increasing antidot density and determined by the peak value of the local current density. In aperiodic arrays, the breakdown current is markedly lower than in periodic arrays of the same antidot density due to higher local current densities at the same total current.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||25 May 2009 13:20|
|Last Modified:||05 Aug 2009 13:57|