期刊
PHYSICAL REVIEW B
卷 85, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.155433
关键词
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资金
- Royal Society
- EPSRC
- Engineering and Physical Sciences Research Council [EP/G035954/1, EP/C509358/1, EP/K005014/1, EP/G041954/1] Funding Source: researchfish
- EPSRC [EP/G041954/1, EP/G035954/1, EP/K005014/1] Funding Source: UKRI
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.
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