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Teleportation of Berry curvature on the surface of a Hopf insulator
A. Alexandradinata, Aleksandra Nelson, Alexey A. Soluyanov
The existing paradigm for topological insulators asserts that an energy gap separates conduction and valence bands with opposite topological invariants. Here, we propose that \text…
Electronic correlations and flattened band in magnetic Weyl semimetal candidate Co3Sn2S2
Yueshan Xu, Jianzhou Zhao, Changjiang Yi +13
The interplay between electronic correlations and topological protection may offer a rich avenue for discovering emergent quantum phenomena in condensed matter. However, electronic…
Observation of multiple types of topological fermions in PdBiSe
B. Q. Lv, Z. -L. Feng, J. -Z. Zhao +12
Topological semimetals with different types of band crossings provide a rich platform to realize novel fermionic excitations, known as topological fermions. In particular, some fer…
Braiding Majorana corner modes in a second-order topological superconductor
Tudor E. Pahomi, Manfred Sigrist, Alexey A. Soluyanov
We propose the concept of a device based on a square-shaped sample of a two-dimensional second-order topological helical superconductor which hosts two zero-dimensional Majorana qu…
Topology of Triple-Point Metals
Georg W. Winkler, Sobhit Singh, Alexey A. Soluyanov
We discuss and illustrate the appearance of topological fermions and bosons in triple-point metals, where a band crossing of three electronic bands occurs close to the Fermi level.…