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복잡계 이론물리 연구단
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Localization of weakly disordered flat band states Highly Cited Paper

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Title
Localization of weakly disordered flat band states
Author(s)
Daniel Leykam; Joshua D. Bodyfelt; Anton S. Desyatnikov; Sergej Flach
Publication Date
2017-01
Journal
EUROPEAN PHYSICAL JOURNAL B, v.90, no.1, pp.1 -
Publisher
SPRINGER
Abstract
Certain tight binding lattices host macroscopically degenerate flat spectral bands. Their origin is rooted in local symmetries of the lattice, with destructive interference leading to the existence of compact localized eigenstates. We study the robustness of this localization to disorder in different classes of flat band lattices in one and two dimensions. Depending on the flat band class, the flat band states can either be robust, preserving their strong localization for weak disorder W, or they are destroyed and acquire large localization lengths ξ that diverge with a variety of unconventional exponents ν, ξ ∼ 1/Wν . (c) EDP Sciences, Societa Italiana di Fisica, Springer-Verlag 2017
URI
https://pr.ibs.re.kr/handle/8788114/3200
ISSN
1434-6028
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > Journal Papers (저널논문)
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