Minibands, magnetic breakdown, and novel magnetoresistance oscillations in short-period lateral superlattices

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.1360

Langenbuch, Michael ; Hennig, Ralf ; Suhrke, Michael ; Rössler, Ulrich ; Albrecht, C. ; Smet, J. ; Weiss, Dieter

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Veröffentlichungsdatum dieses Volltextes: 05 Aug 2009 13:28

Alternative Links zum Volltext:DOI Verlag

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Zusammenfassung

Novel 1/B periodic low-field oscillations observed in the magnetoresistance of short-period lateral superlattices with weak electrostatic modulation are analyzed as being due to the formation of minibands. The energy gaps caused by the weak superlattice potential distort the Fermi circle of the unmodulated two-dimensional electron system (2DES) at the Brillouin-zone boundaries and form smaller ...