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- W1974942867 abstract "We propose an explanation of the recently observed transport anomaly at half-filling in terms of the quasisolid wave function of Chui, Hakim, and Ma. The energy of this state is equal to -0.467, quite close to the extrapolated value from the finite-cluster calculation of -0.469 by Fano et al. At low temperatures, the phonon develops a gap of magnitude 0.39${ensuremath{nu}}^{3/2}$ for ensuremath{nu}ensuremath{le}0.5. This is interpreted as the origin for the dip in ${mathrm{ensuremath{rho}}}_{mathit{x}mathit{x}}$. On the other hand, there exists a gapless mode corresponding to a ``vacancy-interstitial'' excitation. Thus ${mathrm{ensuremath{rho}}}_{mathit{x}mathit{x}}$ never reaches zero completely, as is experimentally observed. The quasisolid wave function can also be written at filling factors other than 1/2. Thus the Hall coefficient is not pinned, consistent with the absence of a sharp Hall plateau." @default.
- W1974942867 created "2016-06-24" @default.
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- W1974942867 date "1990-09-15" @default.
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- W1974942867 title "Two-dimensional electrons near a half-filled Landau level" @default.
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- W1974942867 doi "https://doi.org/10.1103/physrevb.42.5339" @default.
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