Screening in the twodimensional electron gas with spinorbit coupling
Abstract
We study the interplay between electronelectron interaction and Rashba spinorbit coupling in the twodimensional electron gas. Using the random phase approximation we predict new screening properties of the electron gas which result in extension of the region of particlehole excitations and in spinorbit induced suppression of collective modes. In particular, we observe that the spinorbit coupling gives a finite lifetime to plasmons and longitudinal optical phonons, which can be resolved in inelastic Raman scattering. We evaluate the experimentally measurable dynamic structure factor and estimate the range of parameters where the described phenomena are mostly pronounced.
 Publication:

arXiv eprints
 Pub Date:
 June 2005
 DOI:
 10.48550/arXiv.condmat/0506227
 arXiv:
 arXiv:condmat/0506227
 Bibcode:
 2005cond.mat..6227P
 Keywords:

 Condensed Matter  Mesoscopic Systems and Quantum Hall Effect
 EPrint:
 4 pages, 4 figures, change in the content