Pith. sign in

REVIEW

Evidence for weak electronic correlations in Fe-pnictides

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 0905.2633 v1 pith:AGNMMT53 submitted 2009-05-15 cond-mat.supr-con cond-mat.mtrl-scicond-mat.str-el

Evidence for weak electronic correlations in Fe-pnictides

W. L. Yang , P. O. Velasco , J. D. Denlinger , A. P. Sorini , C-C. Chen , B. Moritz , W.-S. Lee , F. Vernay
show 12 more authors
B. Delley J.-H. Chu J. G. Analytis I. R. Fisher Z. A. Ren J. Yang W. Lu Z. X. Zhao J. van den Brink Z. Hussain Z.-X. Shen T. P. Devereaux
This is my paper
classification cond-mat.supr-con cond-mat.mtrl-scicond-mat.str-el
keywords correlationsmaterialsx-rayabsorptionagreementapproxbestcalculations
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

Using x-ray absorption and resonant inelastic x-ray scattering, charge dynamics at and near the Fe $L$ edges is investigated in Fe pnictide materials, and contrasted to that measured in other Fe compounds. It is shown that the XAS and RIXS spectra for 122 and 1111 Fe pnictides are each qualitatively similar to Fe metal. Cluster diagonalization, multiplet, and density-functional calculations show that Coulomb correlations are much smaller than in the cuprates, highlighting the role of Fe metallicity and strong covalency in these materials. Best agreement with experiment is obtained using Hubbard parameters $U\lesssim 2$eV and $J\approx 0.8$eV.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.