title: Observation of a pinning mode in a Wigner solid with ν=1/3 fractional quantum Hall excitations.
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.
authors.affiliation: Princeton University, Princeton, New Jersey 08544, USA.
authors.forename: Han
authors.initials: H
authors.lastname: Zhu
authors.forename: Yong P
authors.initials: YP
authors.lastname: Chen
authors.forename: P
authors.initials: P
authors.lastname: Jiang
authors.forename: L W
authors.initials: LW
authors.lastname: Engel
authors.forename: D C
authors.initials: DC
authors.lastname: Tsui
authors.forename: L N
authors.initials: LN
authors.lastname: Pfeiffer
authors.forename: K W
authors.initials: KW
authors.lastname: West