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Skipping and snake orbits of electrons: Singularities and catastrophes

Research output: Contribution to journalJournal article


Article number155433
Journal publication date16/04/2012
JournalPhysical Review B: Condensed Matter
Number of pages4
Original languageEnglish


Near the sample edge, or a sharp magnetic field step, the drift of two-dimensional (2D) electrons in a magnetic field has the form of skipping and snake orbits. We show that families of skipping and snake orbits of electrons injected at one point inside a 2D metal generically exhibit caustics folds, cusps, and cusp triplets, and, in one exceptional case, an extreme section of the butterfly bifurcation. Periodic appearance of singularities along the +/- B interface leads to the magneto-oscillations of nonlocal conductance in multiterminal electronic devices.

Bibliographic note

©2012 American Physical Society