Skip to main content
SpringerLink
Log in

Perfect spin filtering and conditions for Fano antiresonance and Dicke resonance in a parallel coupled triple quantum-dot array

  • Regular Article
  • Published:
The European Physical Journal B Aims and scope Submit manuscript

    We’re sorry, something doesn't seem to be working properly.

    Please try refreshing the page. If that doesn't work, please contact support so we can address the problem.

Abstract

Electronic transport through a parallel coupled triple quantum dot (tQD) array has been studied by means of nonequilibrium Green’s function formalism. By producing an energy difference between the site energy in the upper QDs and down ones, we find that the linear conductance spectrum of this tQD array displays Fano antiresonance and Dicke resonance effects. As the energy difference increases or the tQD chain length increases to a not very large value, the antiresonance valley in the conductance changes to a well-defined insulating band with very steep edges. Meanwhile, the relations of the Fano antiresonance and the well-defined insulating band are explored, and the conditions for the Fano antiresonance and the Dicke resonance are presented. By introducing a Zeeman splitting due to an external magnetic field, the spin-splitting conductance spectrum shows some highly to 100% spin-polarized windows (SPWs). If a gate voltage runs in these SPWs, we can achieve an entirely spin-polarized current, indicating that such a tQD array can be used as a perfect spin filter and a quantum-signal generator. Moreover, the intradot Coulomb repulsion on the electronic transport is also investigated. The results show that the intradot Coulomb repulsion does not affect the device applications for this system mentioned above.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. S.A. Wolf, D.D. Awschalom, R.A. Buhrman, J.M. Daughton, S. von Molnár, M.L. Roukes, A.Y. Chtchelkanova, D.M. Treger, Science 294, 1488 (2001)

    Article  ADS  Google Scholar 

  2. S. Murakami, N. Nagaosa, S.C. Zhang, Science 301, 1348 (2003)

    Article  ADS  Google Scholar 

  3. I. Zutic, J. Fabian, S. Das Sarma, Rev. Mod. Phys. 76, 323 (2004)

    Article  ADS  Google Scholar 

  4. S.M. Cronenwett, T.H. Osterkamp, L.P. Kouwen-hoven, Science 281, 540 (1998)

    Article  ADS  Google Scholar 

  5. G.H. Liu, G.H. Zhou, J. Appl. Phys. 101, 063704 (2007)

    Article  ADS  Google Scholar 

  6. A.A. Kiselev, K.W. Kim, J. Appl. Phys. 94, 4001 (2003)

    Article  ADS  Google Scholar 

  7. S. Datta, Quantum Transport: Atom to Transistor (Cambridge University Press, Cambridge, 2005)

  8. W.Z. Wang, Nanotechnology 22, 205203 (2011)

    Article  ADS  Google Scholar 

  9. V. Kannan, J.K. Rhee, J. Appl. Phys. 110, 074505 (2011)

    Article  ADS  Google Scholar 

  10. Y.P. Shim, F. Delgado, P. Hawrylak, Phys. Rev. B 80, 115305 (2009)

    Article  ADS  Google Scholar 

  11. T. Tanamoto, Y. Nishi, Phys. Rev. B 76, 155319 (2007)

    Article  ADS  Google Scholar 

  12. A.K. Mitchell, D.E. Logan, Phys. Rev. B 81, 075126 (2010)

    Article  ADS  Google Scholar 

  13. W. Gong, C. Jiang, J. Appl. Phys. 106, 013710 (2009)

    Article  ADS  Google Scholar 

  14. M. Sato, H. Aikawa, K. Kobayshi, S. Katsumoto, Y. Iye, Phys. Rev. Lett. 95, 066801 (2005)

    Article  ADS  Google Scholar 

  15. H. Lu, R. Lü, B.F. Zhu, Phys. Rev. B 71, 235320 (2005)

    Article  ADS  Google Scholar 

  16. H.H. Fu, K.L. Yao, J. Appl. Phys. 108, 084510 (2010)

    Article  ADS  Google Scholar 

  17. R.H. Dicke, Phys. Rev. 89, 472 (1953)

    Article  ADS  Google Scholar 

  18. R.H. Dicke, Phys. Rev. 93, 99 (1954)

    Article  ADS  MATH  Google Scholar 

  19. V.M. Apel, P.A. Orellana, M. Pacheco, Nanotechnology 19, 355202 (2008)

    Article  Google Scholar 

  20. A.E. Cetin, Phys. Rev. A 81, 043812 (2010)

    Article  ADS  Google Scholar 

  21. P. Trocha, J. Barnaś, J. Phys.: Condens. Matter 20, 125220 (2008)

    Article  ADS  Google Scholar 

  22. P. Trocha, J. Barnaś, Phys. Rev. B 78, 075424 (2008)

    Article  ADS  Google Scholar 

  23. W.J. Gong, Y.S. Zheng, Y. Liu, T.Q. Lü, Phys. Rev. B 73, 245329 (2006)

    Article  ADS  Google Scholar 

  24. J.H. Ojeda, M. Pacheco, P.A. Orellana, Nanotechnology 20, 434013 (2009)

    Article  ADS  Google Scholar 

  25. H. Haug, A.P. Jauho, Quantum Kinetics in Transport and Optics of Semiconductors (Springer-Verlag, Berlin, 1998)

  26. M. Luisier, A. Schenk, W. Fichtner, J. Appl. Phys. 100, 043713 (2006)

    Article  ADS  Google Scholar 

  27. S. Barraud, J. Appl. Phys. 106, 063714 (2009)

    Article  ADS  Google Scholar 

  28. A.P. Jauho, N.S. Wingreen, Y. Meir, Phys. Rev. B 50, 5528 (1994)

    Article  ADS  Google Scholar 

  29. J.W. Jiang, J.S. Jian, B. Li, J. Appl. Phys. 109, 014326 (2011)

    Article  ADS  Google Scholar 

  30. A.C. Hewson, The Kondo Problem to Heavy Fermions (Cambridge University Press, Cambridge, 1993)

  31. H. Lu, R. Lü, B.F. Zhu, J. Phys.: Condens. Matter 18, 8961 (2006)

    Article  ADS  Google Scholar 

  32. G. Chen, G. Klimeck, S. Datta, G. Chen, A. Goddard III Willian, Phys. Rev. B 50, 8035 (1994)

    Article  ADS  Google Scholar 

  33. J.Q. You, H.Z. Zheng, Phys. Rev. B 60, 13314 (1999)

    Article  ADS  Google Scholar 

  34. J.Q. You, H.Z. Zheng, Phys. Rev. B 60, 8727 (1999)

    Article  ADS  Google Scholar 

  35. K. Kobayashi, H. Aikawa, A. Sano, S. Katsumoto, Y. Iye, Phys. Rev. B 70, 035319 (2004)

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics and Wuhan National High Magnetic field center, Huazhong University of Science and Technology, Wuhan, 430074, P.R. China

    Hua-Hua Fu & Kai-Lun Yao

  2. China Center of Advanced Science and Technology (CCAST), Beijing, 100080, P.R. China

    Kai-Lun Yao

Authors
  1. Hua-Hua Fu
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Kai-Lun Yao
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hua-Hua Fu.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fu, HH., Yao, KL. Perfect spin filtering and conditions for Fano antiresonance and Dicke resonance in a parallel coupled triple quantum-dot array. Eur. Phys. J. B 86, 237 (2013). https://doi.org/10.1140/epjb/e2013-30747-6

Download citation

  • Received:

  • Revised:

  • Published:

  • DOI: https://doi.org/10.1140/epjb/e2013-30747-6

Keywords

Search

Navigation