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The atomic pair distribution function (PDF) of stoichiometric LaMnO_3 hasbeen measured. This has been fit with a structural model to extract the localJahn-Teller distortion for an ideal Mn(3+)O_6 octahedron. These results arecompared to Rietveld refinements of the same data which give the averagestructure. Since the local structure is being measured in the PDF there is noassumption of long-range orbital order and the real, local, Jahn-Tellerdistortion is measured directly. We find good agreement both with publishedcrystallographic results and our own Rietveld refinements suggesting that in anaccurately stoichiometric material there is long range orbital order asexpected. The local Jahn-Teller distortion has 2 short, 2 medium and 2 longbonds.Comment: 5 pages, 3 postscript figures, minor change

physical review. b, condensed matter

Measurement of the local Jahn-Teller distortion in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">LaMnO</mml:mi></mml:mrow><mml:mrow><mml:mn>3.006</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>

Measurement of the local Jahn-Teller distortion inLaMnO3.006