Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10729121 | Physics Letters A | 2011 | 5 Pages |
Abstract
We study the electronic surface waves (the so-called Tamm states) localized at the interface between a graphene-based superlattice and a homogeneous graphene by applying suitable electrodes on a graphene sheet. The magnitude as well as the sign of the slope of the Tamm dispersive curve can be flexibly tuned just by varying the external voltage. Particularly, in addition to the conventional forward Tamm states, backward Tamm states in which the wave vector of the electronic surface wave is antiparallel with the group velocity can be realized.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Hai-tao Jiang, Zi-li Wang, Zhi-guo Wang, Hong Chen,