Evidence for Two Different Solid Phases of Two Dimensional Electrons in High Magnetic Fields

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dc.creatorChen, Yong P.
dc.creatorLewis, R. M.
dc.creatorEngel, L. W.
dc.creatorTsui, D. C.
dc.creatorYe, P. D.
dc.creatorWang, Z. H.
dc.creatorPfeiffer, L. N.
dc.creatorWest, K. W.
dc.date2004-07-19
dc.date.accessioned2026-07-07T06:30:16Z
dc.date.available2026-07-07T06:30:16Z
dc.descriptionWe have performed RF spectroscopy on very high quality two dimensional electron systems in the high magnetic field insulating phase, usually associated with a Wigner solid (WS) pinned by disorder. We have found two different resonances in the frequency dependent real diagonal conductivity spectrum and we interpret them as coming from \textit{two} different pinned solid phases (labeled as "WS-A" and "WS-B"). The resonance of WS-A is observable for Landau level filling $ν$$<$2/9 (but absent around the $ν$=1/5 fractional quantum Hall effect (FQHE)); it then \textit{crosses over} for $ν$$<$0.18 to the different WS-B resonance which dominates the spectrum at $ν$$<$0.125. Moreover, WS-A resonance is found to show dispersion with respect to the size of transmission line, indicating that WS-A has a large correlation length (exceeding $\sim$100 $μ$m); in contrast no such behavior is found for WS-B. We suggest that quantum correlations such as those responsible for FQHE may play an important role in giving rise to such different solids.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0407472
dc.identifierhttp://arxiv.org/abs/cond-mat/0407472
dc.identifierPhysical Review Letters 93, 206805 (2004) (slight revised version)
dc.identifierdoi:10.1103/PhysRevLett.93.206805
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98299
dc.subjectStrongly Correlated Electrons
dc.subjectMesoscale and Nanoscale Physics
dc.titleEvidence for Two Different Solid Phases of Two Dimensional Electrons in High Magnetic Fields
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