Optical conductivity of a two-dimensional electron liquid with spin-orbit interaction.
The interplay of electron-electron interactions and spin-orbit coupling leads to a new contribution to the homogeneous optical conductivity of the electron liquid. The latter is known to be insensitive to many-body effects for a conventional electron system with parabolic dispersion. The parabolic spectrum has its origin in the Galilean invariance which is broken by spin-orbit coupling. This opens up a possibility for the optical conductivity to probe electron-electron interactions. We analyze the interplay of interactions and spin-orbit coupling and obtain optical conductivity beyond RPA.
Farid
Abdel-Khalek
AK
Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA.
Mishchenko
Eugene G
EG