Open AccessNonmonotonic Fermi surface evolution and its correlation with stripe ordering in bilayer manganites
Author(s) -
Zhe Sun,
Q. Wang,
J. F. Douglas,
YiDe Chuang,
А. В. Федоров,
Eli Rotenberg,
Hsin Lin,
S. Sahrakorpi,
B. Barbiellini,
R. S. Markiewicz,
Arun Bansil,
Hao Zheng,
J. F. Mitchell,
D. S. Dessau
Publication year - 2012
Publication title -
physical review b
Language(s) - English
Resource type - Journals
eISSN - 1538-4489
pISSN - 1098-0121
DOI - 10.1103/physrevb.86.201103
Subject(s) - condensed matter physics , fermi surface , fermi level , fermi gamma ray space telescope , quantum oscillations , doping , photoemission spectroscopy , physics , materials science , electron , x ray photoelectron spectroscopy , quantum mechanics , nuclear magnetic resonance , superconductivity
Using angle-resolved photoemission spectroscopy, we have measured La2−2xSr1+2xMn2O7 over a wide doping range to study the correlation between Fermi surface nesting and stripes of charge and orbital degrees of freedom. We found that the Fermi surface nesting deviates from band calculations with a nonmonotonic behavior, and that one type of stripe is exclusively linked to long flat portions of nested Fermi surface, while the other type prefers to be commensurate with the real-space lattice but also may be driven away from this by the Fermi surface. Complementarily, for certain doping levels pressure from the stripe ordering also may drive the Fermi surface
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