Geometric approach to fragile topology beyond symmetry indicators
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DOI: 10.1103/physrevb.102.115135
Abstract: We present a framework to systematically address topological phases when finer partitionings of bands are taken into account, rather than only considering the two subspaces spanned by valence and conduction bands. Focusing on C2T-symmetric systems… read more here.
Keywords: beyond symmetry; approach fragile; symmetry indicators; topology ... See more keywords
Topological invariants beyond symmetry indicators: Boundary diagnostics for twofold rotationally symmetric superconductors
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.094518
Abstract: Topological crystalline superconductors are known to have possible higher-order topology, which results in Majorana modes on d − 2 or lower-dimensional boundaries. Given the rich possibilities of boundary signatures, it is desirable to have topological… read more here.
Keywords: topological invariants; symmetric superconductors; topology; high symmetry ... See more keywords
Unified understanding of symmetry indicators for all internal symmetry classes
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review B"
DOI: 10.1103/physrevb.98.115150
Abstract: The interplay between symmetry and topology in electronic band structures has been one of the central subjects in condensed-matter physics. Recently, it has been getting clear that a wide variety of useful information about the… read more here.
Keywords: understanding symmetry; unified understanding; symmetry classes; symmetry indicators ... See more keywords
Symmetry Indicators and Anomalous Surface States of Topological Crystalline Insulators
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DOI: 10.1103/physrevx.8.031070
Abstract: The rich variety of crystalline symmetries in solids leads to a plethora of topological crystalline insulators (TCIs) featuring distinct physical properties, which are conventionally understood in terms of bulk invariants specialized to the symmetries at… read more here.
Keywords: surface; surface states; topological crystalline; symmetry indicators ... See more keywords