TY  - JOUR
AU  - Drissi, Lalla Btissam
AU  - Lounis, Samir
AU  - Saidi, E. H.
TI  - Higher-order topological matter and fractional chiral states
JO  - The European physical journal / Plus
VL  - 137
IS  - 7
SN  - 2190-5444
CY  - Heidelberg
PB  - Springer
M1  - FZJ-2022-03909
SP  - 796
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000822497000004
DO  - DOI:10.1140/epjp/s13360-022-02975-2
UR  - https://juser.fz-juelich.de/record/910527
ER  -