Physics – Condensed Matter – Materials Science
Scientific paper
2001-06-22
Phys. Rev. B 65, 014427 (2002)
Physics
Condensed Matter
Materials Science
Reformatted with RevTex
Scientific paper
10.1103/PhysRevB.65.014427
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 an incommensurate Jahn-Teller-coupled charge-density-wave fluctuations, that implies an unusual orbital-stripe pattern parallel to the <100> directions.
Argyriou Dimitri N.
Campbell Branton J.
Islam Zahirul
Ling Chris D.
Lynn Jacob W.
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