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تسجيل مستخدم جديدHigher-order topological band structures
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The interplay of topology and symmetry in a materials band structure may result in various patterns of topological states of different dimensionality on the boundary of a crystal. The protection of these higher-order boundary states comes from topology, with constraints imposed by symmetry. We review the bulk-boundary correspondence of topological crystalline band structures, which relates the topology of the bulk band structure to the pattern of the boundary states. Furthermore, recent advances in the K-theoretic classification of topological crystalline band structures are discussed.
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