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Effects of in-chain and off-chain substitutions on spin fluctuationsin the spin-Peierls compound<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CuGeO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>
The effect of in-chain and off-chain substitutions on one-dimensional (1D) spin fluctuations in the spin-Peierls compound ${\mathrm{CuGeO}}_{3}$ has been studied using Raman scattering in order to understand the interplay between defect induced states, enhanced spin-spin correlations, and the ground state of low-dimensional systems. In-chain and off-chain substitutions quench the spin-Peierls …