English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present an experimental study of the fluctuations of Coulomb blockade peakpositions of a quantum dot. The dot is defined by patterning thetwo-dimensional electron gas of a silicon MOSFET structure using stacked gates.This permits variation of the number of electrons on the quantum dot withoutsignificant shape distortion. The ratio of charging energy to single particleenergy is considerably larger than in comparable GaAs/AlGaAs quantum dots. Thestatistical distribution of the conductance peak spacings in the Coulombblockade regime was found to be unimodal and does not follow the Wignersurmise. The fluctuations of the spacings are much larger than the typicalsingle particle level spacing and thus clearly contradict the expectation ofrandom matrix theory.Comment: 4 pages, 3 figure

Statistics of the Coulomb-blockade peak spacings of a silicon quantum dot