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arxiv: cond-mat/0411438 · v1 · pith:MVR6534Fnew · submitted 2004-11-17 · ❄️ cond-mat.str-el

The Competition between Staggered Field and Antiferromagnetic Interactions in Cugeo3:Fe

S.V Demishev , A.V.Semeno , A.A.Pronin , N.E.Sluchanko , N.A.Samarin , H.Ohta , S.Okubo , M.Kimata
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K.Koyama M.Motokawa
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keywords cugeo3staggeredalongantiferromagneticcompetitioninteractionsanalysisaxes
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The EPR spectra along different crystallographic axes for single crystals of CuGeO3 containing 1% of Fe impurity have been studied in the frequency range 60-360 GHz at temperatures 0.5-30 K. The analysis based on the Oshikawa-Affleck (OA) theory suggests that the temperature dependences of the line width and g-factor are formed as a result of the competition between interchain antiferromagnetic interactions and staggered Zeeman energy. It is found that staggered magnetic moments in CuGeO3:Fe are located predominantly along b axis.

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