2000/07/19 by Tom Griffiths, T. G. Griffiths, E. Comforti +4 · 3 citations
Physics and Astronomy · #Charge (physics) #Condensed matter physics #Electron #Fractional quantum Hall effect #Luttinger liquid #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum Hall effect #Quantum and electron transport phenomena #Quantum mechanics #Quantum spin Hall effect #Quantum tunnelling #Quasiparticle #Shot noise #State (computer science) #Topological Materials and Phenomena #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.85.3918
4 pages, Correct figure 3 and caption included
arxiv created 2000/07/19 · openalex publication_date 2000/10/30 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 \ensuremathν\phantom\rule0ex0ex=\phantom\rule0ex0ex1/3 FQH state, a charge smoothly evolving from e*\phantom\rule0ex0ex=\phantom\rule0ex0exe/3 for t1/3\ensuremath≅1 to e*\phantom\rule0ex0ex=\phantom\rule0ex0exe for t1/3\ensuremath≪1 was determined, agreeing with chiral Luttinger liquid theory. In the \ensuremathν\phantom\rule0ex0ex=\phantom\rule0ex0ex2/5 FQH state the quasiparticle charge evolves smoothly from e*\phantom\rule0ex0ex=\phantom\rule0ex0exe/5 at t2/5\ensuremath≅1 to a maximum charge less than e*\phantom\rule0ex0ex=\phantom\rule0ex0exe/3 at t2/5\ensuremath≪1. Thus it appears that quasiparticles with an approximate charge e/5 pass a barrier they see as almost opaque.