Evidence for a phase transition in the fractional quantum Hall effect

J. P. Eisenstein, H. L. Stormer, L. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

221 Scopus citations

Abstract

We observe a novel transition between distinct fractional quantum Hall states sharing the same filling fraction =(8/5. The transition is driven by tilting the two-dimensional electron-gas sample relative to the external magnetic field and is manifested by a sharp change in the dependence of the measured activation energy on tilt angle. After an initial decline, the activation energy abruptly begins to increase as the tilt angle exceeds about 30°. A plausible model for these results implies a transition from a spin-unpolarized quantum fluid at small angles to a polarized one at higher angles.

Original languageEnglish (US)
Pages (from-to)1540-1543
Number of pages4
JournalPhysical review letters
Volume62
Issue number13
DOIs
StatePublished - 1989
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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