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Experimental evidence for a spin-Peierls-transition in $α'-NaV_2O_5$

M. Weiden·R. Hauptmann·C. Geibel·F. Steglich·M. Fischer·P. Lemmens·G. Güntherodt
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Abstract

We present the first measurements of magnetisation and Raman light scattering on $α'-NaV_2O_5$ single crystals. Below 34 K, we observe a pronounced isotropic decrease of the susceptibility indicating the opening of a spin gap. The transition temperature is slightly field dependent. Raman experiments reveal a crystallographic distortion at the transition. Our results clearly establish $α'-NaV_2O_5$ to be the second inorganic spin-Peierls system.

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M. Weiden, R. Hauptmann, C. Geibel, F. Steglich, M. Fischer, P. Lemmens, G. Güntherodt. 1997-03-05. Experimental evidence for a spin-Peierls-transition in $α'-NaV_2O_5$. https://doi.org/10.1007/s002570050326

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