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

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

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

Authors

Description

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.
4 pages, 4 figures