The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime

Details The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime The Evolution of Quasiparticle Charge in the Fractional Quantum Hall Regime

2000-07-16

arxiv.org/abs/cond-mat/0007264v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, Correct figure 3 and caption included

Scientific paper

10.1103/PhysRevLett.85.3918

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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