One-way transport in laser-illuminated bilayer graphene: A Floquet isolator
We explore the Floquet band-structure and electronic transport in laser-illuminated bilayer graphene. By using a bias voltage perpendicular to the graphene bilayer we show how to get one-way charge and valley transport among two unbiased leads. In contrast to quantum pumping, our proposal uses a dif...
Saved in:
Published in | arXiv.org |
---|---|
Main Authors | , , |
Format | Paper Journal Article |
Language | English |
Published |
Ithaca
Cornell University Library, arXiv.org
10.08.2017
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | We explore the Floquet band-structure and electronic transport in laser-illuminated bilayer graphene. By using a bias voltage perpendicular to the graphene bilayer we show how to get one-way charge and valley transport among two unbiased leads. In contrast to quantum pumping, our proposal uses a different mechanism based on generating a non-reciprocal bandstructure with a built-in directionality. The Floquet states at one edge of a graphene layer become hybridized with the continuum on the other layer, and so the resulting bandstructure allows for one-way transport as in an \textit{isolator}. Our proof-of-concept may serve as a building block for devices exploiting one-way states. |
---|---|
ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1708.03304 |