Orbital mixing and nesting in the bilayer manganites La2-2xSr1+2xMn2O7

R. Saniz*, M. R. Norman, A. J. Freeman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


A first principles study of La2-2xSr1+2xMn2O7 compounds for doping levels 0.3≤x≤0.5 shows that the low energy electronic structure of the majority spin carriers is determined by strong momentum-dependent interactions between the Mn eg dx2-y2 and d3z2-r2 orbitals, which, in addition to an x-dependent Jahn-Teller distortion, differ in the ferromagnetic and antiferromagnetic phases. The Fermi surface exhibits nesting behavior that is reflected by peaks in the static susceptibility, whose positions as a function of momentum have a nontrivial dependence on x.

Original languageEnglish (US)
Article number236402
JournalPhysical review letters
Issue number23
StatePublished - Dec 3 2008

ASJC Scopus subject areas

  • General Physics and Astronomy


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