Berlin 2018 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 66: Poster: Stat. Phys. (Gen., Critical Phen., Biol.)
DY 66.7: Poster
Donnerstag, 15. März 2018, 15:30–18:00, Poster A
Wave localization in locally centrosymmetric disordered lattices — •Christian Morfonios1, Malte Röntgen1, and Peter Schmelcher1,2 — 1Zentrum für Optische Quantentechnologien, Universität Hamburg — 2Center for Ultrafast Imaging, Universität Hamburg
Since the work of Anderson, disorder in a medium is known to generically induce wave localization due to multiple destructive interference, in turn suppressing the transport through a sample. This may be altered by different forms of correlations between the constituents of the disordered medium which typically lead to the delocalization of wave excitations on configuration average, as indicated by various measures. On the other hand, the presence of global centrosymmetry (spatial inversion symmetry) in an otherwise disordered system has recently been argued to enhance the transport efficiency between given sites via delocalized parity eigenstates. Seeing local centrosymmetry - restricted to different subparts of the system - as a particular type of correlation, we address the question of its impact on wave localization and transport properties in one-dimensional tight-binding lattices.