Orthogonality catastrophe in a composite fermion liquid
Darren J. T. Leonard, T. Portengen, V. Nikos Nicopoulos, Neil F. Johnson
Abstract
We discuss the emergence of an orthogonality catastrophe in the response of a composite fermion liquid as the filling factor νapproaches 1/2m, where m=1,2,3.... A tunneling experiment is proposed in which dramatic changes in the I-V characteristic should be observable as νis varied. Explicit I-V characteristics calculated within the so-called Modified Random Phase Approximation, are provided for ν=1/3 -> ν=1/2.
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