Time-Dependent Transport Through a Quantum Dot: Mean-Field Treatment of the Coulomb Interaction

• Authors: T. Kwapiński , R. Taranko , E. Taranko
• Languages of publication: EN

Abstracts

EN

We study an electron transport through a quantum dot in the presence of time-dependent fields. The dot is described by a single level and the intra-dot Coulomb interaction is introduced within the Hartree-Fock approximation. The external fields cause a time-dependent shift of the energy spectrum of the leads and quantum dot. We take into account the spin-polarized solutions for the quantum dot charge. We calculated the time dependence of the current and charge accumulated on the dot, the average current and charge vs. the source-drain and gate voltages in dependence on the Coulomb interaction strength and the frequencies and amplitude of the external fields.

Keywords

EN

85.30.Vw; 85.30.Wx

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2001
• Volume: 99
• Issue: 2
• Pages: 293-305

Dates

published

2001-02

received

2000-08-01

(unknown)

2000-12-12

Contributors

author

T. Kwapiński

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

author

R. Taranko

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

author

E. Taranko

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

References

• 1. L.P. Kouwenhoven, S. Jauher, J. Orenstein, P.L. McEuen, Y. Nagamune, J. Motohisa, H. Sakaki, Phys. Rev. Lett., 73, 3443, 1993
• 2. L.P. Kouwenhoven, A.T. Johnson, N.C. van der Vaart, A. van der Enden, C.J.P.M. Harmans, C.T. Foxon, Z. Phys. B, Condens. Matter, 85, 381, 1991
• 3. H.-K. Zhao, J. Wang, Eur. Phys. J. B, 9, 513, 1999
• 4. Y. Goldin, Y. Avishai, Phys. Rev. B, 61, 16750, 2000
• 5. A.-P. Jauho, N.S. Wingreen, Y. Meir, Phys. Rev. B, 50, 5528, 1994
• 6. Qing-feng Sun, Thung-han Lin, Phys. Rev. B, 56, 3591, 1997
• 7. Qing-feng Sun, Tsung-han Lin, J. Phys., Condens. Matter, 9, 4875, 1998
• 8. Qing-feng Sun, Jian Wang, Tsung-han Lin, Phys. Rev., 58, 13007, 1998
• 9. R.H. Blick, R.J. Haug, D.W. van der Weide, K. von Klitzing, K. Eberl, Appl. Phys. Lett., 67, 3924, 1995
• 10. Qing-feng Sun, Tsung-han Lin, Physica E, 4, 201, 1999
• 11. P. Pals, A. MacKinnon, J. Phys., Condens. Matter, 8, 5401, 1996
• 12. H. Haug, A.-P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors, Springer, Heidelberg 1966
• 13. S. Nonoyama, A. Oguri, Y. Asano, S. Maekawa, Phys. Rev., 50, 2667, 1994
• 14. R. Lopez, R. Aguado, G. Platero, C. Tejedor, Phys. Rev. Lett., 81, 4688, 1998
• 15. D. Goldhaber-Gordon, J. Goeres, M.A. Kastner, H. Shtrikman, D. Mahalu, U. Meirav, http://xxx.lanl.gov/abs/cond-mat/9807233 (1998)
• 16. S.M. Cronenwett, T.H. Oosterkamp, L.P. Kouwenhoven, Science, 281, 540, 1998
• 17. R.H. Blick, R.J. Haug, D.W. van der Weide, K. von Klitzing, K. Eberl, Appl. Phys. Lett., 67, 3924, 1995
• 18. D.M. Newns, Phys. Rev., 178, 1123, 1968
• 19. A. Yoshimori, H. Kawai, M. Makoshi, Progr. Theor. Phys., 80 (Suppl.), 203, 1984
• 20. R. Taranko, E. Taranko, Surf. Sci., 441, 167, 1999

Identifiers

DOI

10.12693/APhysPolA.99.293