Negative magnetoresistance in antidot lattices with saddle points

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.1380

Hennig, Ralf ; Rotter, Peter ; Suhrke, Michael ; Rössler, Ulrich

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Veröffentlichungsdatum dieses Volltextes: 05 Aug 2009 13:28

Alternative Links zum Volltext:DOI Verlag

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Zusammenfassung

We have performed quantum-mechanical as well as classical magnetotransport calculations for a lattice of antidots with additional barriers. Both approaches reproduce the experimentally observed well-known commensurability peaks simultaneously with a negative differential magnetoresistance. By comparing both calculations, we find that quantum interference leads to an enhancement of the latter ...