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Nonlinear superlattice transport limited by Joule heating

Scheuerer, Roland ; Renk, Karl Friedrich ; Schomburg, Ekkehard ; Wegscheider, Werner ; Bichler, Max
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Date of publication of this fulltext: 07 Dec 2009 13:21


We studied the effects caused by Joule heating in GaAs/AlAs superlattices. We measured the current–voltage characteristics of superlattice mesas of different cross sections. Each current–voltage characteristic showed a corresponding peak current followed by a region of negative differential conductivity, according to miniband transport in the superlattice. We found that Joule heating in the mesa ...


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