Theory of the different photoemission spectra of metallic and insulating C60 compounds

Details Theory of the different photoemission spectra of metallic and insulating C60 compounds Theory of the different photoemission spectra of metallic and insulating C60 compounds

2004-05-25

arxiv.org/abs/cond-mat/0405582v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.70.233412

Metallic K3C60 shows pronounced structure and a sharp Fermi edge in integrated photoemission spectra (PES) while the insulating K4C60 and K6C60 phases display only a broad structureless peak. We find that both types of spectra can be explained by the coupling to the optic vibrations of the K+/C60n- ionic lattice. This is suppressed in K3C60 due to metallic screening but is strong in the insulating phases. We use the non-crossing approximation to calculate the density of states (DOS) of electrons in K3C60 coupled to the intramolecular Hg modes in good agreement with the experiment. For K4C60 and K6C60 strong coupling to the low energy optic K+/C60n- modes controls the DOS and yields broad peaks in the PES. A moment expansion is used to calculate the position and width of these peaks which agree well with the experiment.

Affiliated with

Also associated with

No associations

Rating

Theory of the different photoemission spectra of metallic and insulating C60 compounds 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 Theory of the different photoemission spectra of metallic and insulating C60 compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Theory of the different photoemission spectra of metallic and insulating C60 compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-387160