Observation of a spin-polarization instability in tilted magnetic fields

S. Koch*, R. J. Haug, K. von Klitzing, M. Razeghi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We report evidence for a phase transition between a spin-unpolarized state and a spin-polarized state in a two-dimensional electron gas in tilted magnetic fields. This effect is revealed in the magnetoresistance at mK temperatures, where the coincidence of the spin-resolved Landau levels N = 1 ↑ and N = 0 ↓ completely vanishes in samples of sufficiently high mobility, as predicted in recent theoretical studies. The effect is ascribed to electron-electron interactions.

Original languageEnglish (US)
Pages (from-to)76-80
Number of pages5
JournalPhysica B: Physics of Condensed Matter
Issue number1-4
StatePublished - Feb 1993

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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