Small material loss in non-Hermitian photonic crystals with matched real permittivity opens a quasi-bandgap at the Brillouin zone boundary, producing sharp reflectivity peaks explained by second-order perturbation theory.
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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.
Spin fluctuations suppress SOC hybridization in GdAg2/Ag(111) above the Curie temperature by spin decoherence and band-dependent scattering, preserving nodal-line crossings as shown by ARPES spectral redistribution.
citing papers explorer
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Quasi-bandgap behavior in non-Hermitian photonic crystals
Small material loss in non-Hermitian photonic crystals with matched real permittivity opens a quasi-bandgap at the Brillouin zone boundary, producing sharp reflectivity peaks explained by second-order perturbation theory.
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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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Magnetic-fluctuation-driven suppression of spin-orbit hybridization in the surface ferromagnet GdAg$_2$/Ag(111)
Spin fluctuations suppress SOC hybridization in GdAg2/Ag(111) above the Curie temperature by spin decoherence and band-dependent scattering, preserving nodal-line crossings as shown by ARPES spectral redistribution.