Rotter, Peter and Hennig, Ralf and Suhrke, Michael and Rössler, Ulrich (1998) From antidot to dot superlattices: Magnetoresistance anomalies. Physica E 1 (1-4), pp. 245-247.
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For low Fermi energies and large antidot diameters an antidot superlattice changes into a dot superlattice. A negative magnetoresistance (NMR) for low magnetic fields coexisting with a commensurability peak is observed in this transition regime. We reproduce these features for both classical and quantum-mechanical calculations in a model, which traces the NMR back to saddle points with varying heights between the antidots.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|Keywords:||Antidots; Negative magnetoresistance; Commensurability peaks|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:56|