Effect of Friedel oscillations on Capacity of Tunnel Junction

Details Effect of Friedel oscillations on Capacity of Tunnel Junction Effect of Friedel oscillations on Capacity of Tunnel Junction

2003-12-24

arxiv.org/abs/cond-mat/0312626v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages

Scientific paper

Effect of long range charge density oscillations on capacity of tunnel structure is studied within random phase approximation (RPA). Using this approximation we obtain expressions for the short and the long distance behavior of the self-consistent screened potential. We demonstrate that long range density oscillation, commonly referred to as Friedel oscillations, leads to decreasing of total electrostatic capacity. Particular emphasis has been placed on influence of an external magnetic field is applied perpendicular to the barrier plane on the capacity of a structure. It is shown that increasing of magnetic field implies an increase of quantum correction to capacity due to Friedel oscillations.

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