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Tutorial: Computing topological invariants in two-dimensional photonic crystals
María Blanco de Paz, Chiara Devescovi, Geza Giedke +5
The field of topological photonics emerged as one of the most promising areas for applications in transformative technologies: possible applications are in topological lasers or qu…
Large multi-directional spin-to-charge conversion in low symmetry semimetal MoTe at room temperature
C. K. Safeer, Nerea Ontoso, Josep Ingla-Aynés +11
Efficient and versatile spin-to-charge current conversion is crucial for the development of spintronic applications, which strongly rely on the ability to electrically generate and…
Fractional corner charges in spin-orbit coupled crystals
Frank Schindler, Marta Brzezińska, Wladimir A. Benalcazar +5
We study two-dimensional spinful insulating phases of matter that are protected by time-reversal and crystalline symmetries. To characterize these phases we employ the concept of c…
Observation and control of maximal Chern numbers in a chiral topological semimetal
Niels B. M. Schröter, Samuel Stolz, Kaustuv Manna +13
Topological semimetals feature protected nodal band degeneracies characterized by a topological invariant known as the Chern number (C). Nodal band crossings with linear dispersion…
Spectral and optical properties of AgAu(Se,Te) and dark matter detection
Miguel-Ángel Sánchez-Martínez, Iñigo Robredo, Arkaitz Bidauzarraga +4
In this work we study the electronic structure of AgAuSe and AgAuTe, two chiral insulators whose gap can be tuned through small changes in the lattice param…
Multifold nodal points in magnetic materials
Jennifer Cano, Barry Bradlyn, M. G. Vergniory
We describe the symmetry protected nodal points that can exist in magnetic space groups and show that only 3-, 6-, and 8-fold degeneracies are possible (in addition to the 2- and 4…