The structure of nanoscale polaron correlations in La{sub 1.2}Sr{sub 1.8}Mn{sub 2}O{sub 7}.
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 La{sub 1.2}Sr{sub 1.8}Mn{sub 2}O{sub 7} has been determined by a crystallographic analysis of broad satellite maxima observed in diffuse x-ray and neutron-scattering data. The resulting q{approx}(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 {l_angle}100{r_angle} directions.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC; OGA
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949370
- Report Number(s):
- ANL/MSD/JA-40342
- Journal Information:
- Phys. Rev. B, Journal Name: Phys. Rev. B Journal Issue: 1 ; Jan. 1, 2002 Vol. 65; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- ENGLISH
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