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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14579
Title: Tunable Josephson effect in hybrid parallel coupled double quantum dot-superconductor tunnel junction
Authors: Rajput G.
Kumar R.
Ajay
Published in: Superlattices and Microstructures
Abstract: Using non-equilibrium Green's function approach, we study electronic transport through a parallel double quantum dot (DQD) system symmetrically coupled to conventional superconducting leads. Andreev bound states (ABS) and corresponding resonant Cooper pair electron transmission through such a DQD-superconductor tunnel junction around the Fermi energy, a manifestation of Josephson effect, occur due to proximity effect as a result of superconducting order parameter. Interdot tunnel coupling in parallel coupled DQD system and Coulomb interactions regulate the Josephson effect in a very significant manner. Further, it is also found that interdot tunnel coupling has reverse effect on ABS and Cooper pair tunneling in the presence and absence of Coulomb interactions. © 2014 Elsevier Ltd. All rights reserved.
Citation: Superlattices and Microstructures (2014), 73(): 193-202
URI: https://doi.org/10.1016/j.spmi.2014.05.029
http://repository.iitr.ac.in/handle/123456789/14579
Issue Date: 2014
Publisher: Academic Press
Keywords: Andreev bound states
Coulomb interactions
Double quantum dots
Proximity effect
Tunable Josephson effect
ISSN: 7496036
Author Scopus IDs: 26768142100
57214462356
55902776900
Author Affiliations: Rajput, G., Department of Physics, Vallabh Government College, Mandi, Himachal Pradesh 175001, India
Kumar, R., Department of Applied Sciences and Engineering, Indian Institute of Technology, Roorkee Saharanpur Campus, Saharanpur 247001, India
Ajay, Department of Applied Sciences and Engineering, Indian Institute of Technology, Roorkee Saharanpur Campus, Saharanpur 247001, India
Corresponding Author: Rajput, G.; Department of Physics, Vallabh Government College, Mandi, Himachal Pradesh 175001, India; email: ggn.rjpt@gmail.com
Appears in Collections:Journal Publications [PH]

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