Impedance methods for surface state electrons

L. Wilen, R. Giannetta

Research output: Contribution to journalArticlepeer-review


A numerical procedure is given to determine the static charge configuration and electrical impedance of a circular pool of electrons on the surface of liquid helium. The response for an ac Corbino probe is obtained for arbitrary frequency. By fitting the results to audiofrequency capacitance-conductance data the local charge density and electric field configuration are found for arbitrary confining potentials. The locations of 2D plasma modes are also in excellent agreement with those obtained numerically. Analytic forms are derived for uniform charge density configurations.

Original languageEnglish (US)
Pages (from-to)353-369
Number of pages17
JournalJournal of Low Temperature Physics
Issue number5-6
StatePublished - Sep 1988
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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