Observation of pinning mode in Wigner solid of 1/3 fractional quantum Hall excitations

Details Observation of pinning mode in Wigner solid of 1/3 fractional quantum Hall excitations Observation of pinning mode in Wigner solid of 1/3 fractional quantum Hall excitations

2010-06-11

arxiv.org/abs/1006.2335v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

version with edits for clarity, improved Figure 3 and added reference

Scientific paper

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 $\nu=1/3$. The resonance is remarkably similar to resonances previously observed near integer $\nu$, and is interpreted as the collective pinning mode of a disorder-pinned Wigner solid phase of $e/3$-charged carriers .

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