Valley-Dependent Brewster Angles and Goos-Hanchen Effect in Strained Graphene
(2011) In Physical Review Letters 106(17).- Abstract
- We demonstrate theoretically how local strains in graphene can be tailored to generate a valley-polarized current. By suitable engineering of local strain profiles, we find that electrons in opposite valleys (K or K') show different Brewster-like angles and Goos-Hanchen shifts, exhibiting a close analogy with light propagating behavior. In a strain-induced waveguide, electrons in K and K' valleys have different group velocities, which can be used to construct a valley filter in graphene without the need for any external fields.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1987109
- author
- Wu, Zhenhua ; Zhai, F. ; Peeters, F. M. ; Xu, Hongqi LU and Chang, Kai
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Letters
- volume
- 106
- issue
- 17
- article number
- 176802
- publisher
- American Physical Society
- external identifiers
-
- wos:000290100300016
- scopus:79960621574
- pmid:21635056
- ISSN
- 1079-7114
- DOI
- 10.1103/PhysRevLett.106.176802
- language
- English
- LU publication?
- yes
- id
- 08250d26-697c-40bb-a59c-b66f9de50afb (old id 1987109)
- date added to LUP
- 2016-04-01 09:56:08
- date last changed
- 2023-11-09 07:39:43
@article{08250d26-697c-40bb-a59c-b66f9de50afb, abstract = {{We demonstrate theoretically how local strains in graphene can be tailored to generate a valley-polarized current. By suitable engineering of local strain profiles, we find that electrons in opposite valleys (K or K') show different Brewster-like angles and Goos-Hanchen shifts, exhibiting a close analogy with light propagating behavior. In a strain-induced waveguide, electrons in K and K' valleys have different group velocities, which can be used to construct a valley filter in graphene without the need for any external fields.}}, author = {{Wu, Zhenhua and Zhai, F. and Peeters, F. M. and Xu, Hongqi and Chang, Kai}}, issn = {{1079-7114}}, language = {{eng}}, number = {{17}}, publisher = {{American Physical Society}}, series = {{Physical Review Letters}}, title = {{Valley-Dependent Brewster Angles and Goos-Hanchen Effect in Strained Graphene}}, url = {{http://dx.doi.org/10.1103/PhysRevLett.106.176802}}, doi = {{10.1103/PhysRevLett.106.176802}}, volume = {{106}}, year = {{2011}}, }