Journal Article

FZJ-2022-03909

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Higher-order topological matter and fractional chiral states

Drissi, L. B. (Corresponding author)FZJ* ; Lounis, S.FZJ* ; Saidi, E. H.

2022
Springer Heidelberg

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Please use a persistent id in citations: http://hdl.handle.net/2128/32458  doi:10.1140/epjp/s13360-022-02975-2

Abstract: We develop a chiral anomalous fermion hamiltonian proposal to study the higher-order topological (HOT) phase with chiral symmetry C fractionalized like CxCyCz. First, we solve the C-chiral symmetry constraint for eight band models and describe those induced by the partial Ci’s. Then, we determine the explicit expression of fractional states characterising HOT matter and comment on the relationships amongst them and with the standard Altland–Zirnbauer gapless modes. We also give characteristic properties of the gapless fractional states and compute their contribution to the topological index of the chiral model. The findings of this work are shown to be crucial for investigating and handling high order topological phase.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)

Appears in the scientific report 2022

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Springer ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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