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Title
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Snake states and Klein tunneling in a graphene Hall bar with a pn-junction
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Author
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Abstract
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| The Hall (R-H) and bend (R-B) resistances of a graphene Hall bar structure containing a pn-junction are calculated when in the ballistic regime. The simulations are done using the billiard model. Introducing a pn-junction-dividing the Hall bar geometry in two regions-leads to two distinct regimes exhibiting very different physics: (1) both regions are of n-type and (2) one region is n-type and the other p-type. In regime (1), a "Hall plateau"-an enhancement of the resistance-appears for R-H. On the other hand, in regime (2), we found a negative R-H, which approaches zero for large B. The bend resistance is highly asymmetric in regime (2) and the resistance increases with increasing magnetic field B in one direction while it reduces to zero in the other direction. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4704667] |
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Language
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English
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Source (journal)
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Applied physics letters / American Institute of Physics. - New York, N.Y., 1962, currens
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Publication
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New York, N.Y.
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American Institute of Physics
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2012
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ISSN
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0003-6951
[print]
1077-3118
[online]
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DOI
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10.1063/1.4704667
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Volume/pages
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100
:16
(2012)
, p. 163121,1-163121,3
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Article Reference
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163121
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ISI
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000303128500064
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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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