Dynamical Screening in Correlated Electron Materials

Details Dynamical Screening in Correlated Electron Materials Dynamical Screening in Correlated Electron Materials

2010-01-08

arxiv.org/abs/1001.1377v1

Phys. Rev. Lett. 104, 146401 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.104.146401

We present an efficient method for incorporating the dynamical effects of the screening of the Hubbard U by electronic degrees of freedom in the solid into the single site dynamical mean field approximation. The formalism is illustrated by model system calculations which capture the essential features of the frequency dependent interactions proposed for Gd, Ni, SrVO_3 and other compounds. Screening leads to shifts in the metal-insulator phase boundary, changes in the spectral function near the Mott-Hubbard gap edge and to a renormalization of the quasiparticle weight. Hubbard bands are generically neither separated by the screened nor the unscreened interaction energy, implying that the common practice of extracting the Hubbard U from the energies of features in photoemission and inverse photoemission spectra requires reexamination.

Affiliated with

Also associated with

No associations

Rating

Dynamical Screening in Correlated Electron Materials does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamical Screening in Correlated Electron Materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical Screening in Correlated Electron Materials will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-580087