Portal de Periódicos da CAPES

Influence of electromagnetic fluctuations on electron cotunneling

1992; American Physical Society; Volume: 46; Issue: 11 Linguagem: Inglês

10.1103/physrevb.46.6875

1095-3795

A. A. Odintsov, Vladimir Bubanja, Gerd Schön,

Mechanical and Optical Resonators

We analyze electron cotunneling in systems of small normal tunnel junctions embedded in a dissipative electromagnetic environment. As an example we consider two junctions in series with an Ohmic resistor R. We show that at low voltages the electromagnetic fluctuations can suppress the cotunneling current strongly I\ensuremath{\propto}${\mathit{V}}^{3+2\mathit{z}}$, where z=${\mathit{Re}}^{2}$/h. This effect can be used to improve the accuracy of prototypes of the single-electron dc current standard (the pump and the turnstile device).