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Transition from light diffusion to localization in three-dimensional amorphous dielectric networks near the band edge

  • Haberko, Jakub Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, Al. Mickiewicza 30, Krakow 30-059, Poland.
  • Froufe-Pérez, Luis S. Department of Physics, University of Fribourg, Fribourg 1700, Switzerland
  • Scheffold, Frank Department of Physics, University of Fribourg, Fribourg 1700, Switzerland
Published in:
  • Nature Communications. - 2020, vol. 11, no. 1, p. 4867
English AbstractLocalization of light is the photon analog of electron localization in disordered lattices, for whose discovery Anderson received the Nobel prize in 1977. The question about its existence in open three-dimensional materials has eluded an experimental and full theoretical verification for decades. Here we study numerically electromagnetic vector wave transmittance through realistic digital representations of hyperuniform dielectric networks, a new class of highly correlated but disordered photonic band gap materials. We identify the evanescent decay of the transmitted power in the gap and diffusive transport far from the gap. Near the gap, we find that transport sets off diffusive but, with increasing slab thickness, crosses over gradually to a faster decay, signaling localization. We show that we can describe the transition to localization at the mobility edge using the self-consistent theory of localization based on the concept of a position-dependent diffusion coefficient.
Faculté des sciences et de médecine
Département de Physique
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