Electron Transport through Double Quantum Dots with Interdot Coulomb Repulsion

• Authors: D. Sztenkiel , R. Świrkowicz
• Languages of publication: EN

Abstracts

EN

Electron transport through a system of two quantum dots connected in series is studied theoretically with the use of non-equilibrium Green function formalism based on the equation of motion method. Each dot is described by the one-level Anderson Hamiltonian and interdot Coulomb interactions in the form of the Hubbard-like term are taken into account. The electric current and occupation numbers are calculated with the use of two different approaches. The results of the methods are compared and discussed in detail. Strong asymmetry of I-V characteristics with respect to bias voltage reversal are obtained when energy levels of the dots are not aligned.

Keywords

EN

73.23.-b; 73.21.La; 73.23.Hk

Discipline

• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 73.23.-b: Electronic transport in mesoscopic systems
• 73.21.La: Quantum dots

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 3
• Pages: 389-394

Dates

published

2006-09

received

2006-06-17

Contributors

author

D. Sztenkiel

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

author

R. Świrkowicz

• Faculty of Physics, Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland

References

• 1. A.K. Huttel, S. Ludwig, H. Lorenz, K. Eber, J.P. Kotthaus, Phys. Rev. B, 72, 081310, 2005
• 2. N. Fujita, F. Wakaya, Y. Yuba, K. Gamo, Physica E, 7, 420, 2000
• 3. T. Junno, S. Carlsson, H.Q. Xu, L. Samuelson, A.O. Orlov, G.L. Snider, Appl. Phys. Lett., 80, 667, 2002
• 4. D. Sztenkiel, R. Świrkowicz, Acta Phys. Pol. A, 108, 885, 2005
• 5. M.L.L. de Guevara, F. Claro, P.A. Orellana, Phys. Rev. B, 67, 195335, 2003
• 6. W.G. van der Wiel, S. De Franceschi, T. Fujisawa, J.M. Elzerman, S. Tarucha, L.P. Kouwenhoven, Rev. Mod. Phys., 53, 1, 2003
• 7. K. Ishibashi, M. Suzuki, T. Ida, Y. Aoyagi, Appl. Phys. Lett., 79, 1864, 2001
• 8. J. Fransson, O. Eriksson, Phys. Rev. B, 70, 085301, 2004
• 9. J. Fransson, Phys. Rev. B, 69, 201304, 2004
• 10. Q. Sun, H. Guo, Phys. Rev. B, 66, 155308, 2002
• 11. G. Chen, G. Klimeck, S. Datta, G.H. Chen, W.A. Goddard III, Phys. Rev. B, 50, 8035, 1994
• 12. G. Klimeck, G.L. Chen, S. Datta, Phys. Rev. B, 50, 2316, 1994
• 13. R. Ziegler, C. Bruder, H. Schoeller, Phys. Rev. B, 62, 1961, 2000
• 14. A.-P. Jauho, N.S. Wingreen, Y. Meir, Phys. Rev. B, 50, 5528, 1994
• 15. D. Sztenkiel, R. Świrkowicz, Acta Phys. Pol. A, 105, 523, 2004
• 16. W. Rudziński, J. Barnas, R. Swirkowicz, M. Wilczynski, Phys. Rev. B, 71, 205307, 2005

Identifiers

DOI

10.12693/APhysPolA.110.389