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Electron Supercollimation in Graphene and Dirac Fermion Materials Using One-Dimensional Disorder Potentials
Cited 24 time in
Web of Science
Cited 24 time in Scopus
- Authors
- Issue Date
- 2014-07
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, Vol.113 No.2, pp.026802-1-026802-5
- Abstract
- Electron supercollimation, in which a wave packet is guided to move undistorted along a selected direction, is a highly desirable property that has yet to be realized experimentally. Disorder in general is expected to inhibit supercollimation. Here we report a counterintuitive phenomenon of electron supercollimation by disorder in graphene and related Dirac fermion materials. We show that one can use one-dimensional disorder potentials to control electron wave packet transport. This is distinct from known systems where an electron wave packet would be further spread by disorder and hindered in the potential fluctuating direction. The predicted phenomenon has significant implications in the understanding and applications of electron transport in Dirac fermion materials.
- ISSN
- 0031-9007
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