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

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

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

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
Article number236402
JournalPhysical review letters
Volume101
Issue number23
DOIs
Publication statusPublished - Dec 3 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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