Crystal Field and Dzyaloshinsky-Moriya Interaction in orbitally ordered La_{0.95}Sr_{0.05}MnO₃: An ESR Study

J. Deisenhofer , M. V. Eremin , D. V. Zakharov , V. A. Ivanshin , R. M. Eremina , H.-A. Krug von Nidda , A. A. Mukhin , A. M. Balbashov

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A. Loidl

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classification ❄️ cond-mat.str-el

keywords dzyaloshinsky-moriyainteractioncrystal-fieldparametersanalysisangularcomparablecomprehensive

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We present a comprehensive analysis of Dzyaloshinsky-Moriya interaction and crystal-field parameters using the angular dependence of the paramagnetic resonance shift and linewidth in single crystals of La_{0.95}Sr_{0.05}MnO_3 within the orthorhombic Jahn-Teller distorted phase. The Dzyaloshinsky-Moriya interaction (~ 1K) results from the tilting of the MnO_6 octahedra against each other. The crystal-field parameters D and E are found to be of comparable magnitude (~ 1K) with D ~= -E. This indicates a strong mixing of the |3z^2-r^2> and |x^2-y^2> states for the real orbital configuration.

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Crystal Field and Dzyaloshinsky-Moriya Interaction in orbitally ordered La_{0.95}Sr_{0.05}MnO₃: An ESR Study

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