Selective focusing of electrons and holes in a graphene-based superconducting lens
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2012-03-09Citation
10.1103/PhysRevB.85.115411
Physical Review B 85.11 (2012): 115411
ISSN
1098-0121 (print)DOI
10.1103/PhysRevB.85.115411Funded by
This work was supported by COLCIENCIAS, project 110152128235 (S.G. and W.J.H.), and MICINN-Spain via Grant No. FIS2008-04209 and EU project SE2NDProject
1550-235X (online); Gobierno de España. FIS2008-04209; info:eu-repo/grantAgreement/EC/FP7/271554Editor's Version
http://dx.doi.org/10.1103/PhysRevB.85.115411Subjects
Electrons; Graphene; FísicaRights
©2012 American Physical SocietyAbstract
We show that a graphene pnp junction with a central superconducting electrode acts as a Veselago
lens for incoming electrons by focusing them and their phase-conjugated counterpart (holes) into
di erent points of the optical axis. This selective focusing suggested by a simple trajectory analysis is
con rmed by fully microscopic calculations. Although the focusing pattern is degraded by deviations
from the ideal conditions we show that it remains visible for a wide range of parameters. We discuss
how this property can be useful for the detection of entangled electron pairs.
Files in this item
Google Scholar:Gómez, S.
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Burset Atienza, Pablo
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Herrera, William J.
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Levy-Yeyati Mizrahi, Alfredo
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