We report the first experimental observation of strong multifractality in wave functions at the Anderson localization transition in open three-dimensional elastic networks. Our results confirm the recently predicted symmetry of the multifractal exponents. We have discovered that the result of multifractal analysis of the real data depends on the excitation scheme used in the experiment.

Phys. Rev. Lett.

Faez, S., Strybulevych, A., Page, J. H., Lagendijk, A., & van Tiggelen, B. A. (2009). Observation of multifractality in Anderson localization of ultrasound. Phys.Rev.Lett., 103(Article number: 155703), 1–4. doi:10.1103/physrevlett.103.155703