Optical Conductivity of a Two-Dimensional Electron Liquid with Spin-Orbit Interaction

Details Optical Conductivity of a Two-Dimensional Electron Liquid with Spin-Orbit Interaction Optical Conductivity of a Two-Dimensional Electron Liquid with Spin-Orbit Interaction

2006-03-02

arxiv.org/abs/cond-mat/0603058v3

Phys. Rev. Lett. 97, 096604 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures; final version, fig. 3 added, minor changes

Scientific paper

10.1103/PhysRevLett.97.096604

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.

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