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The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime

T. G. Griffiths·E. Comforti·M. Heiblum·Ady Stern·V. Umansky
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Abstract

The charge of quasiparticles in a fractional quantum Hall (FQH) liquid, tunneling through a partly reflecting constriction with transmission t, was determined via shot noise measurements. In the nu=1/3 FQH state, a charge smoothly evolving from e*=e/3 for t=1 to e*=e for t<<1 was determined, agreeing with chiral Luttinger liquid theory. In the nu=2/5 FQH state the quasiparticle charge evolves smoothly from e*=e/5 at t=1 to a maximum charge less than e*=e/3 at t<<1. Thus it appears that quasiparticles with an approximate charge e/5 pass a barrier they see as almost opaque.

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T. G. Griffiths, E. Comforti, M. Heiblum, Ady Stern, V. Umansky. 2000-07-19. The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime. https://doi.org/10.1103/physrevlett.85.3918

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