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Catalogue of topological phonon materials
Yuanfeng Xu, M. G. Vergniory, Da-Shuai Ma +5
Phonons play a crucial role in many properties of solid state systems, such as thermal and electrical conductivity, neutron scattering and associated effects or superconductivity.…
Hofstadter Topology with Real Space Invariants and Reentrant Projective Symmetries
Jonah Herzog-Arbeitman, Zhi-Da Song, Luis Elcoro +1
Adding magnetic flux to a band structure breaks Bloch's theorem by realizing a projective representation of the translation group. The resulting Hofstadter spectrum encodes the non…
Hierarchy of quasi-symmetries and degeneracies in chiral crystal materials CoSi
Lun-Hui Hu, Chunyu Guo, Yan Sun +5
In materials, certain approximated symmetry operations can exist in a lower-order approximation of the effective model but are good enough to influence the physical responses of th…