Advertisement

Negative differential conductance and super-Poissonian shot noise in a single quantum dot coupled to two noncollinear polarized ferromagnetic leads

  • Hai-Bin Xue
  • Yi-Hang Nie
  • Wei Ren
Regular Article

Abstract

We have theoretically studied the full counting statistics of electron transport through a single quantum dot (QD) weakly coupled to two noncollinearly polarized ferromagnetic leads. We found a strong robust bias-voltage-tunable negative differential conductance (NDC) region, in which the shot noise is dramatically enhanced and reaches up to a super-Poissonian value. In particular, the formed super-Poissonian shot noise can still occur in a wide bias voltage region where only the singly-occupied electronic states entering the bias voltage window. The underlying mechanisms of the observed NDC and super-Poissonian shot noise originate from the quantum coherence between the two singly-occupied electronic states. In addition, the skewness in the NDC regime can be significantly increased up to a large positive value, which is also attributed to the quantum coherence of the QD system, and the variation of the skewness value is more sensitive to the quantum coherence than the shot noise. Our findings suggest a QD-based tunable NDC device, and the predicted properties of high-order current cumulants can provide a deeper understanding of electron transport through the single QD.

Keywords

Solid State and Materials 

References

  1. 1.
    K. Ono, D.G. Austing, Y. Tokura, S. Tarucha, Science 297, 1313 (2002) CrossRefADSGoogle Scholar
  2. 2.
    K. Ono, S. Tarucha, Phys. Rev. Lett. 92, 256803 (2004) CrossRefADSGoogle Scholar
  3. 3.
    J. Weis, R.J. Haug, K.V. Klitzing, K. Ploog, Phys. Rev. Lett. 71, 4019 (1993) CrossRefADSGoogle Scholar
  4. 4.
    R.J. Haug, J. Weis, R.H. Blick, K. von Klitzing, K. Eberl, K. Ploog, Nanotechnology 7, 381 (1996) CrossRefADSGoogle Scholar
  5. 5.
    A.A. Farajian, K. Esfarjani, Y. Kawazoe, Phys. Rev. Lett. 82, 5084 (1999) CrossRefADSGoogle Scholar
  6. 6.
    D. Weinmann, W. Häusler, W. Pfaff, B. Kramer, U. Weiss, Europhys. Lett. 26, 467 (1994) CrossRefADSGoogle Scholar
  7. 7.
    F. Cavaliere, A. Braggio, J.T. Stockburger, M. Sassetti, B. Kramer, Phys. Rev. Lett. 93, 036803 (2004) CrossRefADSGoogle Scholar
  8. 8.
    J. Aghassi, A. Thielmann, M.H. Hettler, G. Schön, Phys. Rev. B 73, 195323 (2006) CrossRefADSGoogle Scholar
  9. 9.
    S.Y. Müller, V. Koerting, D. Schuricht, S. Andergassen, Europhys. Lett. 92, 10002 (2010) CrossRefGoogle Scholar
  10. 10.
    H.B. Xue, Z.X. Zhang, H.M. Fei, Eur. Phys. J. B 85, 336 (2012) CrossRefADSGoogle Scholar
  11. 11.
    H.W. Zhang, H.B. Xue, Y.H. Nie, AIP Adv. 3, 102116 (2013) CrossRefADSGoogle Scholar
  12. 12.
    I. Weymann, J. Phys.: Condens. Matter 22, 015301 (2010) ADSGoogle Scholar
  13. 13.
    I. Weymann, B.R. Bułka, J. Barnaś, Phys. Rev. B 83, 195302 (2011) CrossRefADSGoogle Scholar
  14. 14.
    T. Koch, J. Loos, A. Alvermann, H. Fehske, Phys. Rev. B 84, 125131 (2011) CrossRefADSGoogle Scholar
  15. 15.
    I. Weymann, J. Barnaś, J. Phys.: Condens. Matter 19, 096208 (2007) ADSGoogle Scholar
  16. 16.
    C.J. Xia, D.S. Liu, H.C. Liu, X.J. Zhai, Physica E 43, 1518 (2011) CrossRefADSGoogle Scholar
  17. 17.
    J.Y. Luo, H.J. Jiao, Y. Shen, G. Cen, X.L. He, C. Wang, J. Phys.: Condens. Matter 23, 145301 (2011) ADSGoogle Scholar
  18. 18.
    K.H. Yang, B. Song, G.S. Tian, Y.P. Wang, R.S. Han, R.Q. Han, Chin. Phys. Lett. 20, 717 (2003) CrossRefADSGoogle Scholar
  19. 19.
    L.S. Levitov, H.W. Lee, G.B. Lesovik, J. Math. Phys. 37, 4845 (1996) CrossRefADSMATHMathSciNetGoogle Scholar
  20. 20.
    V.K. Khlus, Sov. Phys. J. Exp. Theor. Phys. 66, 1243 (1987) Google Scholar
  21. 21.
    D.A. Bagrets, Y.V. Nazarov, Phys. Rev. B 67, 085316 (2003) CrossRefADSGoogle Scholar
  22. 22.
    S.K. Wang, H. Jiao, F. Li, X.Q. Li, Y.J. Yan, Phys. Rev. B 76, 125416 (2007) CrossRefADSGoogle Scholar
  23. 23.
    D. Marcos, C. Emary, T. Brandes, R. Aguado, Phys. Rev. B 83, 125426 (2011) CrossRefADSGoogle Scholar
  24. 24.
    Y.M. Blanter, M. Buttiker, Phys. Rep. 336, 1 (2000) CrossRefADSGoogle Scholar
  25. 25.
    Quantum Noise in Mesoscopic Physics, edited by Yu.V. Nazarov (Kluwer, Dordrecht, 2003) Google Scholar
  26. 26.
    H.B. Xue, Ann. Phys. 339, 208 (2013) CrossRefADSGoogle Scholar
  27. 27.
    H.B. Xue, Y.H. Nie, J. Chen, W. Ren, Ann. Phys. 354, 375 (2015) CrossRefGoogle Scholar
  28. 28.
    G. Schaller, G. Kießlich, T. Brandes, Phys. Rev. B 81, 205305 (2010) CrossRefADSGoogle Scholar
  29. 29.
    A. Komnik, H. Saleur, Phys. Rev. Lett. 96, 216406 (2006) CrossRefADSGoogle Scholar
  30. 30.
    J. König, J. Martinek, Phys. Rev. Lett. 90, 166602 (2003) CrossRefADSGoogle Scholar
  31. 31.
    M. Braun, J. König, J. Martinek, Phys. Rev. B 70, 195345 (2004) CrossRefADSGoogle Scholar
  32. 32.
    I. Weymann, J. Barnaś, Eur. Phys. J. B 46, 289 (2005) CrossRefADSGoogle Scholar
  33. 33.
    W. Rudziński, J. Barnaś, R. Świrkowicz, M. Wilczyński, Phys. Rev. B 71, 205307 (2005) CrossRefADSGoogle Scholar
  34. 34.
    R. Świrkowicz, M. Wilczyński, M. Wawrzyniak, J. Barnaś, Phys. Rev. B 73, 193312 (2006) CrossRefADSGoogle Scholar
  35. 35.
    P. Simon, P.S. Cornaglia, D. Feinberg, C.A. Balseiro, Phys. Rev. B 75, 045310 (2007) CrossRefADSGoogle Scholar
  36. 36.
    I. Weymann, J. Barnaś, Phys. Rev. B 75, 155308 (2007) CrossRefADSGoogle Scholar
  37. 37.
    M. Braun, J. König, J. Martinek, Phys. Rev. B 74, 075328 (2006) CrossRefADSGoogle Scholar
  38. 38.
    S. Lindebaum, D. Urban, J. König, Phys. Rev. B 79, 245303 (2009) CrossRefADSGoogle Scholar
  39. 39.
    X.Q. Li, P. Cui, Y.J. Yan, Phys. Rev. Lett. 94, 066803 (2005) CrossRefADSGoogle Scholar
  40. 40.
    X.Q. Li, J. Luo, Y.G. Yang, P. Cui, Y.J. Yan, Phys. Rev. B 71, 205304 (2005) CrossRefADSGoogle Scholar
  41. 41.
    C. Flindt, T. Novotny, A.P. Jauho, Europhys. Lett. 69, 475 (2005) CrossRefADSGoogle Scholar
  42. 42.
    C. Flindt, T. Novotny, A. Braggio, M. Sassetti, A.P. Jauho, Phys. Rev. Lett. 100, 150601 (2008) CrossRefADSGoogle Scholar
  43. 43.
    C. Flindt, T. Novotny, A. Braggio, M. Sassetti, A.P. Jauho, Phys. Rev. B 82, 155407 (2010) CrossRefADSGoogle Scholar
  44. 44.
    C.W. Groth, B. Michaelis, C.W.J. Beenakker, Phys. Rev. B 74, 125315 (2006) CrossRefADSGoogle Scholar
  45. 45.
    G. Kießlich, P. Samuelsson, A. Wacker, E. Schöll, Phys. Rev. B 73, 033312 (2006) CrossRefADSGoogle Scholar
  46. 46.
    J.M. Elzerman, R. Hanson, L.H. Willems van Beveren, B. Witkamp, L.M.K. Vandersypen, L.P. Kouwenhoven, Nature 430, 431 (2004) CrossRefADSGoogle Scholar
  47. 47.
    H.B. Xue, Y.H. Nie, Z.J. Li, J.Q. Liang, J. Appl. Phys. 108, 033707 (2010) CrossRefADSGoogle Scholar
  48. 48.
    H.B. Xue, Y.H. Nie, Z.J. Li, J.Q. Liang, Phys. Lett. A 375, 716 (2011) CrossRefADSGoogle Scholar
  49. 49.
    H.B. Xue, Y.H. Nie, Z.J. Li, J.Q. Liang, J. Appl. Phys. 109, 083706 (2011) CrossRefADSGoogle Scholar
  50. 50.
    C. Flindt, C. Fricke, F. Hohls, T. Novotný, K. Netočný, T. Brandes, R.J. Haug, Proc. Natl. Acad. Sci. USA 106, 10116 (2009) CrossRefADSGoogle Scholar
  51. 51.
    C. Fricke, F. Hohls, N. Sethubalasubramanian, L. Fricke, R.J. Haug, Appl. Phys. Lett. 96, 202103 (2010) CrossRefADSGoogle Scholar
  52. 52.
    N. Ubbelohde, C. Fricke, C. Flindt, F. Hohls, R.J. Haug, Nat. Commun. 3, 612 (2012) CrossRefADSGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.College of Physics and Optoelectronics, Taiyuan University of TechnologyTaiyuanP.R. China
  2. 2.Institute of Theoretical Physics, Shanxi UniversityTaiyuanP.R. China
  3. 3.International Centre for Quantum and Molecular Structures and Department of Physics, Shanghai UniversityShanghaiP.R. China

Personalised recommendations