2 papers
cond-mat.mes-hall2025
Quantum geometry and low-frequency optical conductivity of nodal planes
Raymond Wiedmann, Kirill Alpin, Moritz M. Hirschmann +1
Nodal planes, two-dimensional symmetry-enforced band crossings, can carry a topological charge, similar to Weyl points. While the transport properties of Weyl points are well under…
cond-mat.mes-hall2024
Topological responses from gapped Weyl points in 2D altermagnets
Kirill Parshukov, Raymond Wiedmann, Andreas P. Schnyder
We study the symmetry requirements for topologically protected spin-polarized Weyl points in 2D altermagnets. The topology is characterized by a quantized -Berry phase and the…