Charging Effects in a Quantum Wire with Leads
RUSSIAN ACADEMY OF SCIENCES MOSCOW INST OF RADIO ENGINEERING AND ELECTRONICS
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We have found that a quantum wire in mesoscopic structures is charged as a result of the electron density redistribution between the wire and the reservoirs which ones this wire connects. Charging of a wire is investigated in the frame of self-consistent field approach. The wire may be charged positively, negatively or be neutral as a whole. Correspondingly to these cases. a quantum well appear in the wire. a barrier arise between the wire and the leads or Friedel oscillations appear in the vicinity of the contacts. Charging of a quantum wire produces a variation in its conductance. This effect is especially important in non-linear transport regime.
- Solid State Physics