Observation of a new phase transition between fully and partially polarized quantum Hall states with charge and spin gaps at $\nu =2/3$

N. Freytag, Y. Tokunaga, M. Horvatic +3

The average electron spin-polarization $\mathcal{P}$ of two-dimensional electron gas confined in $GaAs/GaAlAs$ multiple quantum-wells was measured by nuclear magnetic resonance (NMR…