Abstract
The existence of the magnetic-field-induced liquid-to-solid phase transition in an extreme quantum-limit 2D electron plasma is established for electrons at a high-quality GaAs/GaAlAs heterojunction by detection of a gapless magnetophonon excitation branch with radio-frequency spectroscopy. The phase diagram, determined for Wigner-Seitz to Bohr radius ratio , extrapolates to a zero-temperature critical Landau-level filling factor and a zero-filling-factor melting temperature close to the classical () limit.
- Received 12 April 1988
DOI:https://doi.org/10.1103/PhysRevLett.60.2765
©1988 American Physical Society