Multiple interacting bilayer electron system: Magnetotransport and heat capacity measurements

E. Grivei, S. Melinte, V. Bayot, C. Manoharan, M. Shayegan

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

We report the fabrication, magnetotransport, and heat capacity measurements on a GaAs/AlGaAs multiple double-quantum-well heterostructure in the quantum Hall (QH) regime. Magnetotransport data reveal the existence of a correlated QH state at total Landau level filling factor νt = 1. Near νt = 2, we observe the nuclear contribution to the measured heat capacity of the Ga and As atoms in GaAs quantum wells. The heat capacity data indicate that Skyrmions are the lowest-energy excitations of the νt = 2 ferromagnetic QH ground state.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number19
DOIs
StatePublished - Nov 12 2003

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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