Quantized transport in ballistic rectifiers: sign reversal and step-like output

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.11801

Haan, S. ; Lorke, Axel ; Kotthaus, Jörg P. ; Bichler, Max ; Wegscheider, Werner

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Veröffentlichungsdatum dieses Volltextes: 11 Jan 2010 13:02

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Zusammenfassung

Tunable ballistic rectifiers with different geometries are investigated. On standard structures with a symmetry-breaking scatterer embedded in a cross-bar geometry, we observe—apart from the usual rectification behavior—oscillations in the output characteristics that show the importance of quantum transport for the understanding of the rectification mechanism. On samples that are designed taking ...