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Strong electric field effect on weak localization

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  • Hu, G.Y.
  • O'Connell, R.F.

Abstract

The influence of an electric field on weak localization is studied by a recently proposed generalized quantum Langevin equation approach to the conductivity problem. A general formula for the memory function of the non-interacting electron gas, in the presence of high order impurity scattering and an arbitrary electric field, is derived. In the low field case, a scale and frequency dependent conductivity is obtained, which reduces to the well known scale dependent conductivity in the static limit. In the high field case, the conductivity is field dependent through the drift velocity. It is shown that the presence of strong electric fields tends to delocalize the one and two dimensional electron systems if one adopts the electron heating model. However, if the electron gas does not heat up, the conductivity will be field independent.

Suggested Citation

  • Hu, G.Y. & O'Connell, R.F., 1988. "Strong electric field effect on weak localization," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 153(1), pages 114-128.
    • Handle: RePEc:eee:phsmap:v:153:y:1988:i:1:p:114-128
    DOI: 10.1016/0378-4371(88)90106-9
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    1. Hovey, Allan, 1955. "Britain and the Unification of Europe," International Organization, Cambridge University Press, vol. 9(3), pages 323-337, August.
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