Interplay between the Correlations and Superconductivity in Electron Transport through the Double Quantum Dots

• Authors: J. Barański , T. Domański
• Languages of publication: EN

Abstracts

EN

We study the influence of electron correlations on nonequilibrium transport through the quantum dots coupled between one metallic and one superconducting electrode. Such type of nanodevices are characterized by the induced on-dot pairing spread from the superconducting lead (proximity effect) and effectively responsible for mixing the particle with hole excitations. On the other hand, strong Coulomb repulsion between the opposite spin electrons tends to suppress a double occupancy of the quantum dots competing with the on-dot superconducting order. The Coulomb interactions can also cause a screening of the quantum dot spin by itinerant electrons of the metallic lead giving rise to formation of the Kondo resonance. We analyze interplay of such phenomena for the setup of double quantum dots where the quantum interference (such as Fano) effects influence the subgap electron transport through the Andreev scattering.

Keywords

EN

73.63.Kv; 73.23.Hk; 74.45.+c; 74.50.+r

Discipline

• 74.50.+r: Tunneling phenomena; Josephson effects(for SQUIDs, see 85.25.Dq; for Josephson devices, see 85.25.Cp; for Josephson junction arrays, see 74.81.Fa)
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 73.63.Kv: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1213-1215

Dates

published

2012-05

Contributors

author

J. Barański

• Institute of Physics, M. Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

T. Domański

• Institute of Physics, M. Curie-Skłodowska University, Pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

References

• 1. Y. Yamada, Y. Tanaka, N. Kawakami, arXiv/1101.5339 (2011) and other references cited therein
• 2. T. Domański, A. Donabidowicz, Phys. Rev. B 78, 073105 (2008); T. Domański, A. Donabidowicz, K.I. Wysokiński, Phys. Rev. B 76, 104514 (2007)
• 3. R.S. Deacon, Y. Tanaka, A. Oiwa, R. Sakano, K. Yoshida, K. Shibata, K. Hirakawa, S. Tarucha, Phys. Rev. Lett. 104, 076805 (2010); R.S. Deacon, Y. Tanaka, A. Oiwa, R. Sakano, K. Yoshida, K. Shibata, K. Hirakawa, S. Tarucha, Phys. Rev. B 81, 121308(R) (2010)
• 4. M. Krawiec, K.I. Wysokiński, Supercond. Sci. Technol. 17, 103 (2004)
• 5. R. Zitko, Phys. Rev. B 81, 115316 (2010)
• 6. S. Sasaki, H. Tamura, T. Akazaki, T. Fujisawa, Phys. Rev. Lett. 103, 266806 (2009)
• 7. A. Karmanyos, I. Grace, C.J. Lambert, Phys. Rev. B 79, 075119 (2009)
• 8. Y. Tanaka, N. Kawakami, A. Oguri, Phys. Rev. B 78, 035444 (2008)
• 9. I. Maruyama, N. Shibata, K. Ueda, J. Phys. Soc. Jpn. 73, 3239 (2004)
• 10. Y. Tanaka, N. Kawakami, A. Oguri, J. Phys. Soc. Jpn. 76, 074701 (2007)
• 11. H. Haug, A.-P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors, Springer Verlag, Berlin 1996

Identifiers

DOI

10.12693/APhysPolA.121.1213