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cond-mat.mtrl-sci2026
Multiscale Quasiparticle Electronic Structure and Excitonic Properties of CdSe Nanoclusters
Surender Kumar, Martin Thümmler, Alexander Croy +2
Quantum confinement in stoichiometric nanoclusters dramatically attenuates electronic screening, driving a delicate, size-dependent competition between…
cond-mat.mtrl-sci2026
Self-consistent evaluation of the Berry connection for Wannier functions
Martin Thümmler, Thomas Lettau, Alexander Croy +2
The Berry connection is a gauge-dependent quantity frequently used to describe the optical response of solids. Its evaluation requires a k-derivative with respect to the cell perio…