Observation of pinning mode in Wigner solid of 1/3 fractional quantum Hall excitations
arXiv:1006.2335 · doi:10.1103/PhysRevLett.105.126803
Abstract
We report the observation of a resonance in the microwave spectra of the real diagonal conductivities of a two-dimensional electron system within a range of ~ +- .0.015 $ from filling factor $ν=1/3$. The resonance is remarkably similar to resonances previously observed near integer $ν$, and is interpreted as the collective pinning mode of a disorder-pinned Wigner solid phase of $e/3$-charged carriers .
version with edits for clarity, improved Figure 3 and added reference