Speaker
Janik Kailasvuori
(MPIPKS (Dresden))
Description
Semiclassical spin-coherent kinetic equations can be derived
from quantum theory with many different formalisms. For
2d Dirac electrons (e.g. in graphene, 3d topological
insulators, ...) we found to our surprise that well established
formalisms give different results. We have been able to
point out the exact source of the discrepancy and raise
fundamental questions about how to derive semiclassical
kinetic equation when some quantum coherence must be
retained. Further, in monolayer graphene we make the
unintuitive finding that there could be finite electron-hole
coherent quantum effects even far away from the point
where electron and hole bands touch.
