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- W2019929168 abstract "We report the observation of low frequency collective excitations of the two-dimensional electron system in a GaAs/GaAlAs heterojunction in a magnetic field. The excitations are present for temperatures less than 2 K and fields corresponding to filling factors between ν = 12 and ν = 7. Their dispersion relation is linear in the wave vector k, and shows no evidence of a gap. These modes vanish between the Hall plateaus and elsewhere their propagation velocity follows a H−1 1n(αH) field dependence. The features of these modes are consistent with a propagating perimeter wave in a quantum 2D Coulomb system." @default.
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- W2019929168 date "1988-01-01" @default.
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- W2019929168 title "Low frequency collective excitations in the quantum-hall system" @default.
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- W2019929168 doi "https://doi.org/10.1016/0039-6028(88)90732-7" @default.
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