4 papers
Symmetry's Real Topology
J. X. Dai, Y. X. Zhao
Symmetry-protected topological phases have been a central theme in condensed matter physics and beyond over the past two decades. Most efforts have focused on topological classific…
Switchable half-quantum flux states in a ring of the kagome superconductor CsVSb
Shuo Wang, Ilaria Maccari, Xilin Feng +14
Magnetic flux quantization in units of is a defining feature of superconductivity, rooted in the charge-2e nature of Cooper pairs. In a ring geometry, the flux quanti…
Asymmetric real topology of conduction and valence bands
J. X. Dai, Chen Zhang, Y. X. Zhao
Previously, it was believed that conduction and valence bands exhibit a symmetry: They possess opposite topological invariants (e.g., the Chern numbers of conduction and valence ba…
Topological classification for chiral symmetry with non-equal sublattices
J. X. Dai, Y. X. Zhao
Chiral symmetry on bipartite lattices with different numbers of -sites and -sites is exceptional in condensed matter, as it gives rise to zero-energy flat bands. Crystalline…