Nonlinear superlattice transport limited by Joule heating

DOI to cite this document:: 10.5283/epub.11315

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

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Abstract

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 ...