Transport properties of a two-dimensional-hole gas with density varied over a very wide range

Y. Hanein, Hadas Shtrikman, U. Meirav

Research output: Contribution to journalArticlepeer-review

Abstract

We utilize an inverted heterostructure grown on (311)A GaAs to realize a two-dimensional hole gas (2DHG) with a built-in back gate. The density of the 2DHG is easily and reproducibly varied between 5 × 109 and 5 × 1011 cm-2, thus achieving the lowest density of a 2DHG reported to date. The mobility of the 2DHG is highly anisotropic in the (311)A plane. We observe a cross-over from a metallic behavior at the higher densities to a localized behavior in the lower range.

Original languageEnglish
Pages (from-to)498-501
Number of pages4
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume2
Issue number1-4
DOIs
StatePublished - 15 Jul 1998
Externally publishedYes

Keywords

  • Anisotropy
  • Low density
  • Two-dimensional hole gas

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