Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 20, Issue 32, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/20/32/325221
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Funding
- Fundação para a Ciência e a Tecnologia [PTDC/FIS/64404/2006] Funding Source: FCT
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We study the tunneling of chiral electrons in graphene through a region where the electronic spectrum changes from the usual linear dispersion to a hyperbolic dispersion, due to the presence of a gap. It is shown that, contrary to the tunneling through a potential barrier, the transmission of electrons is, in this case, smaller than one for normal incidence. This mechanism may be useful for designing electronic devices made of graphene.
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