Journal
PHYSICAL REVIEW B
Volume 70, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.70.140407
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We present the first angle-resolved photoemission spectroscopy (ARPES) results on three-dimensional manganese perovskite La0.66Sr0.34MnO3. In contrast to ARPES results on layered manganites, a finite and k-dependent spectral weight at the Fermi level was observed. We propose a complex energy band to describe the low binding energy electronic states, which may result from the temporally dynamic orbital orientation distributions and/or nanoscale charge inhomogeneities, to account for the anomalously broad ARPES features observed in the measurements. Flat sections of the Fermi surface were determined. A density wave resulting from nesting instabilities induced by the flat Fermi surface sections is manifested by the energy band folding.
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