A dispersionless topological flat band with p-orbital character around the U-K line and type-I/II saddle points connected by a flat band enhance DOS near the Fermi level in CsBi2.
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Mixed-state topology in non-Hermitian systems is characterized via the Uhlmann connection, yielding a thermal Uhlmann-Chern number that differs from pure-state topology and extends to higher-dimensional Abelian and non-Abelian cases.
Projective symmetry in hexagonal lattices with rational magnetic flux enforces novel non-zero-energy Dirac touchings at pi flux, constrains zero-energy Dirac points for general fluxes, and imposes distinct Chern number rules on gapped bands and multiplets.
Semi-Dirac materials can support four corner-localized Majorana zero modes by turning their anisotropic non-chiral edge states into effective Kitaev chains via s-wave proximity pairing.
citing papers explorer
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Type-I and Type-II Saddle Points and a Topological Flat Band in a Bi-Pyrochlore Superconductor CsBi2
A dispersionless topological flat band with p-orbital character around the U-K line and type-I/II saddle points connected by a flat band enhance DOS near the Fermi level in CsBi2.
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Mixed-State Topology in Non-Hermitian Systems
Mixed-state topology in non-Hermitian systems is characterized via the Uhlmann connection, yielding a thermal Uhlmann-Chern number that differs from pure-state topology and extends to higher-dimensional Abelian and non-Abelian cases.
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Topological constraints on the electronic band structure of hexagonal lattice in a magnetic field
Projective symmetry in hexagonal lattices with rational magnetic flux enforces novel non-zero-energy Dirac touchings at pi flux, constrains zero-energy Dirac points for general fluxes, and imposes distinct Chern number rules on gapped bands and multiplets.
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Corner Majorana states in semi-Dirac materials
Semi-Dirac materials can support four corner-localized Majorana zero modes by turning their anisotropic non-chiral edge states into effective Kitaev chains via s-wave proximity pairing.