title: Anderson Mobility Gap Probed by Dynamic Coherent Backscattering.
abstract: We use dynamic coherent backscattering to study one of the Anderson mobility gaps in the vibrational spectrum of strongly disordered three-dimensional mesoglasses. Comparison of experimental results with the self-consistent theory of localization allows us to estimate the localization (correlation) length as a function of frequency in a wide spectral range covering bands of diffuse transport and a mobility gap delimited by two mobility edges. The results are corroborated by transmission measurements on one of our samples.
authors.affiliation: Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
authors.forename: L A
authors.initials: LA
authors.lastname: Cobus
authors.affiliation: Université Grenoble Alpes, LPMMC, F-38000 Grenoble, France.|CNRS, LPMMC, F-38000 Grenoble, France.
authors.forename: S E
authors.initials: SE
authors.lastname: Skipetrov
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, Université Denis Diderot-Paris 7, 1 rue Jussieu, 75005 Paris, France.
authors.forename: A
authors.initials: A
authors.lastname: Aubry
authors.affiliation: Université Grenoble Alpes, LPMMC, F-38000 Grenoble, France.|CNRS, LPMMC, F-38000 Grenoble, France.
authors.forename: B A
authors.initials: BA
authors.lastname: van Tiggelen
authors.affiliation: Institut Langevin, ESPCI ParisTech, CNRS UMR 7587, Université Denis Diderot-Paris 7, 1 rue Jussieu, 75005 Paris, France.
authors.forename: A
authors.initials: A
authors.lastname: Derode
authors.affiliation: Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
authors.forename: J H
authors.initials: JH
authors.lastname: Page