Critical resistance in the alas quantum hall ferromagnet

E. P. De Poortere, E. Tutuc, M. Shayegan

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Magnetic transitions in AlAs two-dimensional electrons give rise to sharp resistance spikes within the quantum Hall effect. Such spikes are likely caused by carrier scattering at magnetic domain walls below the Curie temperature. We report a critical behavior in the temperature dependence of the spike width and amplitude, from which we deduce the Curie temperature of the quantum Hall ferromagnet. Our data also reveal that the Curie temperature increases monotonically with carrier density.

Original languageEnglish (US)
JournalPhysical review letters
Volume91
Issue number21
DOIs
StatePublished - Jan 1 2003

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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