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A non-Hermitian extension of a Chern insulator and its bulk-boundary correspondence are investigated. It is shown that in addition to the robust chiral edge states that reflect the nontrivial topology… Click to show full abstract
A non-Hermitian extension of a Chern insulator and its bulk-boundary correspondence are investigated. It is shown that in addition to the robust chiral edge states that reflect the nontrivial topology of the bulk (nonzero Chern number), anomalous helical edge states localized only at one edge can appear, which are unique to the non-Hermitian Chern insulator.
Keywords:
chern insulator;
edge;
edge states;
anomalous helical;
non hermitian
Journal Title: Physical Review B
Year Published: 2018
Link to full text (if available)
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Journal Title: Physical Review B
Year Published: 2018
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!