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Pressure dependence of the spin gap in BaVS_3

I. Kezsmarki·Sz. Csonka·H. Berger·L. Forro·P. Fazekas·G. Mihaly
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Abstract

We carried out magnetotransport experiments under hydrostatic pressure in order to study the nature of the metal-insulator transition in BaVS$_3$. Scaling relations for $ρ(T,H,p)$ are established and the pressure dependence of the spin gap is determined. Our new results, in conjunction with a re-analysis of earlier specific heat and susceptibility data, demonstrate that the transition is weakly second order. The nature of the phase diagram in the $T$--$p$--$H$ space is discussed.

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I. Kezsmarki, Sz. Csonka, H. Berger, L. Forro, P. Fazekas, G. Mihaly. 2000-09-11. Pressure dependence of the spin gap in BaVS_3. https://doi.org/10.1103/physrevb.63.081106

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