Effect of Landau-level mixing on quantum-liquid and solid states of two-dimensional hole systems

M. B. Santos, J. Jo, Y. W. Suen, L. W. Engel, Mansour Shayegan

Research output: Contribution to journalArticle

53 Scopus citations

Abstract

Measurements on dilute, low-disorder, two-dimensional hole systems at GaAs/AlxGa1-xAs interfaces reveal insulating behavior near different fractional quantum Hall liquid states. We interpret these insulating phases as pinned Wigner solid states and experimentally show that the filling factor around which they are observed moves to progressively smaller values as the areal hole density is increased. This dependence demonstrates the dramatic influence of Landau-level mixing, or the effective diluteness, on the liquid-solid transitions of a two-dimensional system.

Original languageEnglish (US)
Pages (from-to)13639-13642
Number of pages4
JournalPhysical Review B
Volume46
Issue number20
DOIs
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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