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Distribution of current fluctuations in a bistable conductor

2016/06/30 by Shilpi Singh, S. Singh, J. T. Peltonen +8
Engineering · Mathematics · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Bistability #Condensed matter physics #Conductance #Conductor #Current (fluid) #Distribution (mathematics) #Electron #Materials science #Mathematical analysis #Mathematics #Molecular Junctions and Nanostructures #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Range (aeronautics) #Statistical physics #Thermodynamics #Transistor #Voltage #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.94.241407

published as Phys. Rev. B 94, 241407 (2016) · 5+4 pages, 4 figures, final version

openalex publication_date 2016/12/27 · arxiv created 2017/01/02 · arxiv updated 2017/01/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We measure the full distribution of current fluctuations in a single-electron transistor with a controllable bistability. The conductance switches randomly between two levels due to the tunneling of single electrons in a separate single-electron box. The electrical fluctuations are detected over a wide range of time scales and excellent agreement with theoretical predictions is found. For long integration times, the distribution of the time-averaged current obeys the large-deviation principle. We formulate and verify a fluctuation relation for the bistable region of the current distribution.

Citations