Magnetoroton satellites in the fractional quantum Hall effect

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5 Citations (Scopus)


The properties of the optical-absorption spectrum of the Laughlin liquid state in the presence of a localized dynamic perturbation are investigated. We find that the absorption spectrum consists of magnetoroton satellites. The threshold of the absorption spectrum is finite and a power-law singularity is absent because of the incompressibility of the Laughlin state. A possibility for direct experimental observation of magnetorotons is discussed.

Original languageEnglish
Pages (from-to)1836-1838
Number of pages3
JournalPhysical Review B
Issue number3
Publication statusPublished - 1989
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics


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