Skipping and snake orbits of electrons: Singularities and catastrophes

被引：22

作者：

Davies, Nathan ^{[1
]}

Patel, Aavishkar A. ^{[1
,2
]}

Cortijo, Alberto ^{[1
,3
]}

Cheianov, Vadim ^{[1
]}

Guinea, Francisco ^{[4
]}

Fal'ko, Vladimir I. ^{[1
]}

机构：

[1] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[2] Indian Inst Technol, Dept Phys, Kanpur 208016, Uttar Pradesh, India

[3] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

[4] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 15期

基金：

英国工程与自然科学研究理事会;

关键词：

COMPOSITE FERMIONS; EDGE STATES; GAS; WAVES;

D O I：

10.1103/PhysRevB.85.155433

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

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