Microscopic theory of Cooper pair beam splitters based on carbon nanotubes
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2011-09-26Citation
10.1103/PhysRevB.84.115448
Physical Review B 84.11 (2011): 115448
ISSN
1550-235X (online); 1098-0121 (print)DOI
10.1103/PhysRevB.84.115448Funded by
This work was supported by MICINN-Spain via Grant No. FIS2008-04209, the EU FP7 project SE2ND (P.B. and A.L.Y.), and DIB from Universidad Nacional de Colombia, Project No. 12170 (W.J.H.)Project
Gobierno de España. FIS2008-04209; info:eu-repo/grantAgreement/EC/FP7/271554Editor's Version
http://dx.doi.org/10.1103/PhysRevB.84.115448Subjects
FísicaRights
© 2011 American Physical SocietyAbstract
We analyze microscopically a Cooper pair splitting device in which a central superconducting lead is connected to two weakly coupled normal leads through a carbon nanotube. We determine the splitting efficiency at resonance in terms of geometrical and material parameters, including the effect of spin-orbit scattering. While the efficiency in the linear regime is limited to 50% and decays exponentially as a function of the width of the superconducting region, we show that it can rise to ∼100% in the nonlinear regime for certain regions of the stability diagram
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Google Scholar:Burset Atienza, Pablo
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Herrera, William J.
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Levy-Yeyati Mizrahi, Alfredo
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