University of Cambridge > > Theory of Condensed Matter > Exact Density-Functional Potentials for Time-Dependent Quasiparticles

Exact Density-Functional Potentials for Time-Dependent Quasiparticles

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Gareth Conduit.

We calculate the exact Kohn-Sham potential that describes, within time-dependent density-functional theory, the propagation of an electron quasiparticle wave packet of nonzero crystal momentum added to a ground-state model semiconductor. The potential is observed to have a highly nonlocal functional dependence on the charge density, in both space and time, giving rise to features entirely lacking in local or adiabatic approximations. The dependence of the nonequilibrium part of the Kohn-Sham electric field on the local current and charge density is identified as a key element of the correct Kohn-Sham functional. Finally, we apply the phenomenology to systems carrying steady currents.

This talk is part of the Theory of Condensed Matter series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity