The focusing effect of electron flow and negative refraction in three-dimensional topological insulators
We numerically study the focusing effect induced by a single p – n junction in three-dimensional topological insulators (3D TIs). It is found that, for either surface states or bulk states of 3D TIs, the corresponding electrons injected from the n / p region can be perfectly focused at the symmetric...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
IOP Publishing
2017-01-01
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Series: | New Journal of Physics |
Subjects: | |
Online Access: | https://doi.org/10.1088/1367-2630/aa8ec5 |