Signatures of fractional statistics in noise experiments in quantum hall fluids

Eun Ah Kim, Michael Lawler, Smitha Vishveshwara, Eduardo Fradkin

Research output: Contribution to journalArticle

Abstract

The elementary excitations of fractional quantum Hall (FQH) fluids are vortices with fractional statistics. Yet, this fundamental prediction has remained an open experimental challenge. Here we show that the cross-current noise in a three-terminal tunneling experiment of a two dimensional electron gas in the FQH regime can be used to detect directly the statistical angle of the excitations of these topological quantum fluids. We show that the noise also reveals signatures of exclusion statistics and of fractional charge. The vortices of Laughlin states should exhibit a bunching effect, while for higher states in the Jain sequences they should exhibit an "antibunching" effect.

Original languageEnglish (US)
Article number176402
JournalPhysical review letters
Volume95
Issue number17
DOIs
StatePublished - Oct 21 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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