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Splitting of Long-Wavelength Modes of the Fractional Quantum Hall Liquid at $ν=1/3$

C. F. Hirjibehedin·Irene Dujovne·A. Pinczuk·B. S. Dennis·L. N. Pfeiffer·K. W. West
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Abstract

Resonant inelastic light scattering experiments at $ν=1/3$ reveal a novel splitting of the long wavelength modes in the low energy spectrum of quasiparticle excitations in the charge degree of freedom. We find a single peak at small wavevectors that splits into two distinct modes at larger wavevectors. The evidence of well-defined dispersive behavior at small wavevectors indicates a coherence of the quantum fluid in the micron length scale. We evaluate interpretations of long wavelength modes of the electron liquid.

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C. F. Hirjibehedin, Irene Dujovne, A. Pinczuk, B. S. Dennis, L. N. Pfeiffer, K. W. West. 2005-09-04. Splitting of Long-Wavelength Modes of the Fractional Quantum Hall Liquid at $ν=1/3$. https://doi.org/10.1103/physrevlett.95.066803

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