Phys. Rev. B 65, 014427 (2001) [5 pages]Structure of nanoscale polaron correlations in La1.2Sr1.8Mn2O7Received 6 July 2001; published 11 December 2001 A system of strongly interacting electron-lattice polarons can exhibit charge and orbital order at sufficiently high polaron concentrations. In this study, the structure of short-range polaron correlations in the layered colossal magnetoresistive perovskite manganite La1.2Sr1.8Mn2O7 has been determined by a crystallographic analysis of broad satellite maxima observed in diffuse x-ray and neutron-scattering data. The resulting q≈(0.3,0,±1) modulation is a longitudinal octahedral-stretch mode, consistent with incommensurate Jahn-Teller-coupled charge-density-wave fluctuations, that implies an unusual orbital-stripe pattern parallel to the 〈100〉 directions. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.65.014427
DOI:
10.1103/PhysRevB.65.014427
PACS:
75.30.Vn, 71.30.+h, 71.38.-k, 71.45.Lr
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