title: Fermi Surface of Three-Dimensional La(1-x)Sr(x)MnO3 Explored by Soft-X-Ray ARPES: Rhombohedral Lattice Distortion and its Effect on Magnetoresistance.
abstract: Electronic structure of the three-dimensional colossal magnetoresistive perovskite La(1-x)Sr(x)MnO3 has been established using soft-x-ray angle-resolved photoemission spectroscopy with its intrinsically sharp definition of three-dimensional electron momentum. The experimental results show much weaker polaronic coupling compared to the bilayer manganites and are consistent with the theoretical band structure including the empirical Hubbard parameter U. The experimental Fermi surface unveils the canonical topology of alternating three-dimensional electron spheres and hole cubes, with their shadow contours manifesting the rhombohedral lattice distortion. This picture has been confirmed by one-step photoemission calculations including displacement of the apical oxygen atoms. The rhombohedral distortion is neutral to the Jahn-Teller effect and thus polaronic coupling, but affects the double-exchange electron hopping and thus the colossal magnetoresistance effect.
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.|National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
authors.forename: L L
authors.initials: LL
authors.lastname: Lev
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
authors.forename: J
authors.initials: J
authors.lastname: Krempaský
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
authors.forename: U
authors.initials: U
authors.lastname: Staub
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
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authors.initials: VA
authors.lastname: Rogalev
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
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authors.initials: T
authors.lastname: Schmitt
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Shi
authors.affiliation: Institut für Materialchemie, Technische Universität Wien, A-1060 Wien, Austria.
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authors.lastname: Blaha
authors.affiliation: National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.|RIKEN Center for Emergent Matter Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
authors.forename: A S
authors.initials: AS
authors.lastname: Mishchenko
authors.affiliation: National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
authors.forename: A A
authors.initials: AA
authors.lastname: Veligzhanin
authors.affiliation: National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
authors.forename: Y V
authors.initials: YV
authors.lastname: Zubavichus
authors.affiliation: National Research Centre "Kurchatov Institute", 123182 Moscow, Russia.
authors.forename: M B
authors.initials: MB
authors.lastname: Tsetlin
authors.affiliation: Department Chemie, Ludwig-Maximilians-Universität München, 81377 Munich, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Volfová
authors.affiliation: Department Chemie, Ludwig-Maximilians-Universität München, 81377 Munich, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Braun
authors.affiliation: Department Chemie, Ludwig-Maximilians-Universität München, 81377 Munich, Germany.|New Technologies-Research Center, University of West Bohemia, 306 14 Plzen, Czech Republic.
authors.forename: J
authors.initials: J
authors.lastname: Minár
authors.affiliation: Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland.
authors.forename: V N
authors.initials: VN
authors.lastname: Strocov