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Evidence of ferromagnetic quantum phase transition in Ba1-xSrxVS3 (Articolo in rivista)

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Evidence of ferromagnetic quantum phase transition in Ba1-xSrxVS3 (Articolo in rivista) (literal)

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A. Gauzzi 1, N. Barisic 2, F. Licci 1, G. Calestani 3, F. Bolzoni 1, P. Fazekas 4, E. Gilioli 1 and L. Forro 2 (2006)
Evidence of ferromagnetic quantum phase transition in Ba1-xSrxVS3
in arXiv; Cornell University medical center, New York (Stati Uniti d'America)
(literal)

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A. Gauzzi 1, N. Barisic 2, F. Licci 1, G. Calestani 3, F. Bolzoni 1, P. Fazekas 4, E. Gilioli 1 and L. Forro 2 (literal)

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1 IMEM-CNR, Area delle Scienze, 43010 Parma, Italy; 2 Institut de Physique de la Matiere Complexe, EPFL, CH-1015 Lausanne, Switzerland; 3 Dipartimento di Chimica, Universita di Parma, Area delle Scienze, 43100 Parma, Italy; 4 Research Institute for Solid State Physics and Optics, P.O. Box 49, H-1525 Budapest, Hungary (literal)

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Abstract

Resistivity under pressure and magnetization measurements on Ba1-xSrxVS3 single crystals with 0 ? x ? 0.18 and no sulphur deficiency show an abrupt onset of ferromagnetic (FM) order at a critical value x=0.07, concomitant to a change of the magnetic properties at the metal-insulator transition (MIT) and to a collapse of the unit cell at ambient temperature. A reduction of the MIT temperature to 50 K upon x that scales as the V-S distance is also observed. This gives evidence of a chemical pressure induced quantum phase transition that stabilizes the incipient FM order of BaVS3. The 0.07 < x results suggest a coexistence of FM and metallic phases at larger x. (literal)

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