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Matches in SemOpenAlex for { <https://semopenalex.org/work/W1970758894> ?p ?o ?g. }

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• W1970758894 startingPage "R497" @default.
• W1970758894 abstract "Inelastic neutron scattering has been performed on semiconducting ${mathrm{La}}_{1ensuremath{-}x}{mathrm{Ca}}_{x}{mathrm{MnO}}_{3}$ single crystals, which exhibit a slightly canted magnetic structure at a low doping rate ($x$=0.05,0.08). The dynamic study reveals the coexistence of two excitation branches with very different characteristics, and local modes for $x$=0.05. The first branch is anisotropically dispersed and is readily attributed to spin waves; the Mn spins are coupled by exchange forces, indicating a strong decrease of the antiferromagnetic interplane coupling by doping. The second branch is weakly and isotropically dispersed, which suggests a coupling induced by the hole hopping. Its unusual $q$-dependent intensity reveals that this excitation is associated with a very short ferromagnetic correlation length (ensuremath{approx}8--10 AA{}), reminiscent of a picture of mobile ``magnetic polarons.''" @default.
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• W1970758894 date "1997-07-01" @default.
• W1970758894 modified "2023-10-13" @default.
• W1970758894 title "Coherent waves of magnetic polarons propagating in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ca</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=…" @default.
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• W1970758894 doi "https://doi.org/10.1103/physrevb.56.r497" @default.
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