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    Crossover and Coexistence of Quasiparticle Excitations in the Fractional Quantum Hall Regime at nu >= 1/2

Crossover and Coexistence of Quasiparticle Excitations in the Fractional Quantum Hall Regime at nu >= 1/2

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New low-lying excitations are observed by inelastic light scattering at filling factors nu = p/(phip+=1) of the fractional quantum Hall regime with phi = 4, Coexisting with these modes throughout the range nu phi = 4 boundary at nu = 1/3.