Charge fluctuations in the edge states of normal-superconducting hybrid nano-structures
Andrew M Martin; Thomas Gramespacher; Markus Büttiker; Andrew M Martin; Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland; Thomas Gramespacher; Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland; Markus Büttiker; Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland
Журнал:
Journal of Physics: Condensed Matter
Дата:
1999-12-20
Аннотация:
In this work we show how to calculate the equilibrium and non-equilibrium charge fluctuations in a gated normal mesoscopic conductor which is attached to one normal lead and one superconducting lead. We then consider an example where the structure is placed in a high magnetic field, such that the transport is dominated by edge states. We calculate the equilibrium and non-equilibrium charge fluctuations in the gate, for a single edge state, comparing our results to those for the same system, but with two normal leads. We then consider the specific example of a quantum point contact and calculate the charge fluctuations in the gate for more than one edge state.
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