Advertisement

Effects of Temperature on the Scattering Phases and Density of States in Quantum Wires

Chapter
  • 1.7k Downloads
Part of the NanoScience and Technology book series (NANO)

Abstract

We investigate the effects of temperature on the scattering phases in a quantum wire with an attractive scatterer. We consider two bound states, belonging to different subbands, which couple to a scattering channel and give rise to two Fano resonances. In this context, we first demonstrate the deviation of the transmission phase from the Friedel phase at the zeros of the transmission. It is then shown that temperature effects tend to smear sharp features of the transmission phase; namely, the phase drops become less than π and acquire finite widths, which increase linearly in the low-temperature regime. The influence of temperature on the Friedel phase and density of states is also examined.

Keywords

Quantum Wires Fano Resonance Friedel Phase Transmission Phase Drop Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    A. Yacoby, M. Heiblum, D. Mahalu D, H. Shtrikman, Phys. Rev. Lett. 74, 4047 (1995)Google Scholar
  2. 2.
    R. Schuster, E. Bucks, M. Heiblum, D. Mahalu, V. Umansky, H. Shtrikman, Nature (London) 385, 417 (1997)Google Scholar
  3. 3.
    S. Katsumoto, K. Kobayashi, H. Aikawa, A. Sano, Y. Iye, Superlattices Microstruct. 24, 151 (2003)Google Scholar
  4. 4.
    M. Sigrist, A. Fuhrer, T. Ihn, K. Ensslin, S. E. Ulloa, W. Wegscheider, M. Bichler, Phys. Rev. Lett. 93, 066802 (2004)Google Scholar
  5. 5.
    T. Taniguchi, M. Büttiker, Phys. Rev. B 60, 13814 (1999)Google Scholar
  6. 6.
    A.L. Yeyati, M. Büttiker, Phys. Rev. B 62, 7307 (2000)Google Scholar
  7. 7.
    A. Silva, Y. Oreg, Y. Gefen, Phys. Rev. B 66, 195316 (2002)Google Scholar
  8. 8.
    T. Nakanishi, K. Terakura, T. Ando, Phys. Rev. B 69, 115307 (2004)Google Scholar
  9. 9.
    Y.S. Joe, E.R. Hedin, A.M. Satanin, Phys. Rev. B 76, 085419 (2007)Google Scholar
  10. 10.
    E.R. Hedin, Y.S. Joe, A.M. Satanin, J. Phys.: Condens. Matter. 21, 015303 (2009)Google Scholar
  11. 11.
    J. Friedel, Philos. Mag. 43, 153 (1952)Google Scholar
  12. 12.
    R. Dashen, S.K. Ma, H.J. Bernstein, Phys. Rev. 187, 345 (1969)Google Scholar
  13. 13.
    S.A. Gurvitz, Y.B. Levinson, Phys. Rev. B 47, 10578 (1993)Google Scholar
  14. 14.
    A.A. Clerk, X. Waintal, P.W. Brouwer, Phys. Rev. Lett. 86, 4636 (2001)Google Scholar
  15. 15.
    A.M. Satanin, Y.S. Joe, Phys. Rev. B 71, 205417 (2005)Google Scholar
  16. 16.
    V. Vargiamidis, H.M. Polatoglou, Phys. Rev. B 71, 075301 (2005)Google Scholar
  17. 17.
    V. Vargiamidis, V. Fessatidis, Phys. Rev. B 79, 205309 (2009)Google Scholar
  18. 18.
    D. Sánchez, L. Serra, Phys. Rev. B 74, 153313 (2006)Google Scholar
  19. 19.
    V. Vargiamidis, V. Fessatidis, N.J.M. Horing, J. Appl. Phys. 106, 043710 (2009)Google Scholar
  20. 20.
    H. Friedrich, Theoretical Atomic Physics (Springer, Berlin, 1990), p. 138Google Scholar
  21. 21.
    K. Kobayashi, H. Aikawa, S. Katsumoto, Y. Iye, Phys. Rev. Lett. 88, 256806 (2002)Google Scholar
  22. 22.
    M.A. Topinka, B.J. LeRoy, S.E.J. Shaw, E.J. Heller, R.M. Westervelt, K.D. Maranowski, A.C. Gosard, Science 289, 2323 (2000)Google Scholar
  23. 23.
    M.A. Topinka, B.J. LeRoy, R.M. Westervelt, S.E.J. Shaw, R. Fleischmann, E.J. Heller, K.D. Maranowski, A.C. Gosard, Nature 410, 183 (2001)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of PhysicsAristotle UniversityThessalonikiGreece
  2. 2.Department of PhysicsFordham UniversityBronxUSA
  3. 3.Department of Physics and Engineering PhysicsStevens Institute of TechnologyHobokenUSA

Personalised recommendations