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The k-dependent electronic structure of the low temperature ferromagnetic state of La 1.2 Sr 1.8 Mn 2 O 7 was measured using angle-resolved photoemission spectroscopy and calculated using the local spin density approximation (LSDA). The measured near-Fermi energy states display E vs k and symmetry relationships which agree relatively well with the LSDA prediction through much of the Brillouin zone, and the locus of lowest energy excitations matches the predicted large Fermi surface quite well.doi:10.1103/physrevlett.81.192 fatcat:lyxmvxzqtvbnta7gl7rp3kx5sa