Dresden 2020 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 47: Poster Session Correlated Electrons 2

TT 47.2: Poster

Mittwoch, 18. März 2020, 15:00–19:00, P2/3OG

Properties of effective potentials obtained within the Localisation Landscape Theory of random potentials — •Sebastian Luhn and Erich Runge — Technische Universität Ilmenau, Institut für Physik, 98693 Ilmenau

Anderson Localisation is the leading paradigm for localisation in random potentials, e.g. due to interface roughness and alloy disorder in semiconductor heterostructures. The so-called Localisation Landscape Theory of S. Mayboroda et al. maps disordered potentials to a family of much smoother "effective potentials", whose minima are likely candidates for localized states. We study these effective potentials for 1D Gaussian random distributed atom chains via numerical simulations and approximate analytical expressions. In particular we compare the distributions of extrema and the spatial correlation of the effective Potential to the properties of the original potential.

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