Enhancement of quantum dot peak-spacing fluctuations in the fractional quantum Hall regime

E. Shopen, Y. Meir

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The fluctuations in the spacing of the tunneling resonances through a quantum dot have been studied in the quantum Hall regime. Using the fact that the ground state of the system is described very well by the Laughlin wave function, we were able to determine accurately, via classical Monte Carlo calculations, the amplitude and distribution of the peak-spacing fluctuations. Our results clearly demonstrate a big enhancement of the fluctuations as the importance of the electronic correlations increases, namely as the density decreases and filling factor becomes smaller. We also find that the distribution of the fluctuations approaches a Gaussian with increasing density of random potentials.

Original languageEnglish
Pages (from-to)766-771
Number of pages6
JournalEurophysics Letters
Volume44
Issue number6
DOIs
StatePublished - 15 Dec 1998

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