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

Yong P. Chen, R. M. Lewis, L. W. Engel, D. C. Tsui, P. D. Ye, Z. H. Wang, L. N. Pfeiffer, and K. W. West
Phys. Rev. Lett. 93, 206805 – Published 11 November 2004

Abstract

We have observed two different rf resonances in the frequency dependent real diagonal conductivity of very high quality two-dimensional electron systems in the high magnetic field insulating phase and interpret them as coming from two different pinned electron solid phases (labeled as “A” and “B”). The “A” resonance is observable for Landau level filling ν<2/9 [reentrant around the ν=1/5 fractional quantum Hall effect (FQHE)] and then crosses over to the different “B” resonance which dominates at sufficiently low ν. Moreover, the “A” resonance is found to show dispersion with respect to the size of the transmission line, indicating that the “A” phase has a large correlation length. We suggest that quantum correlations such as those responsible for FQHE may play an important role in giving rise to such different solids.

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  • Received 20 July 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.206805

©2004 American Physical Society

Authors & Affiliations

Yong P. Chen1,2, R. M. Lewis2,1, L. W. Engel2, D. C. Tsui1, P. D. Ye2,1,*, Z. H. Wang3,2, L. N. Pfeiffer4, and K. W. West4

  • 1Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA
  • 2National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32310, USA
  • 3Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
  • 4Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA

  • *Current address: Agere Systems, 555 Union Blvd., Allentown, PA 18109, USA.

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Issue

Vol. 93, Iss. 20 — 12 November 2004

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