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