Andreev Reflection in Transport through a Quantum Dot Coupled to Ferromagnetic and Superconducting Electrodes

• Authors: K. Bocian , W. Rudziński , J. Barnaś
• Languages of publication: EN

Abstracts

EN

Spin-dependent tunneling through a quantum dot coupled to one ferromagnetic and one superconducting electrodes is studied theoretically in the Andreev reflection regime. Electrical conductance is calculated in terms of the nonequilibrium Green function technique. Effects due to the Zeeman splitting of the dot level are analyzed in both linear and nonlinear transport regimes, and are compared with the corresponding effects due to coherent intradot spin rotation.

Keywords

EN

72.25.Mk; 73.63.Kv; 73.23.Hk

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.25.Mk: Spin transport through interfaces
• 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: 1201-1203

Dates

published

2012-05

Contributors

author

K. Bocian

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

W. Rudziński

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland

author

J. Barnaś

• Department of Physics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

• 1. R.J. Soulen, Jr., J.M. Byers, M.S. Osofsky, B. Nadgorny, T. Ambrose, S.F. Cheng, P.R. Broussard, C.T. Tanaka, J. Nowak, J.S. Moodera, A. Barry, J.M.D. Coey, Science 282, 85 (1998)
• 2. Y. Zhu, Q.-F. Sun, T.-H. Lin, Phys. Rev. B 65, 024516 (2001)
• 3. X. Cao, Y. Shi, X. Song, S. Zhou, Phys. Rev. B 70, 235341 (2004)
• 4. P. Zhang, Y.-X. Li, J. Phys., Condens. Matter 21, 095602 (2009)
• 5. Z.Y. Zeng, F. Claro, Baowen Li, cond-mat/0110502
• 6. T. Domański, A. Donabidowicz, K.I. Wysokiński, Phys. Rev. B 78, 144515 (2008)

Identifiers

DOI

10.12693/APhysPolA.121.1201