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Title
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Valley-dependent brewster angles and Goos-Hänchen effect in strained graphene
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Author
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Abstract
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| 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-Hänchen 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. |
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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
:
American Physical Society
,
2011
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ISSN
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0031-9007
[print]
1079-7114
[online]
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DOI
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10.1103/PHYSREVLETT.106.176802
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Volume/pages
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106
:17
(2011)
, p. 176802,1-176802,4
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Article Reference
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176802
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ISI
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000290100300016
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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