Transport and magnetic properties of BaVSe3

Ana Akrap, Vladan Stevanović, Mirta Herak, Marko Miljak, Neven Barišić, Helmuth Berger, and László Forró
Phys. Rev. B 78, 235111 – Published 10 December 2008

Abstract

We report a comprehensive study of transport, magnetotransport, and magnetic properties of single crystals of BaVSe3. The paramagnetic metal-ferromagnetic metal transition at 43 K was followed as a function of pressure by measuring the electrical resistivity and the thermoelectric power. The exponent of the low-temperature power-law dependence of the resistivity increases with pressure. The effective magnetic moment obtained from magnetic susceptibility in the paramagnetic regime is μeff=1.40μB. The study was completed by band-structure calculations based on density-functional theory both at ambient and high pressures. Transport coefficients of BaVSe3 resemble the high-pressure phase of BaVS3, which suggest that the replacement of sulfur with selenium can be viewed as chemical pressure.

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  • Received 9 September 2008

DOI:https://doi.org/10.1103/PhysRevB.78.235111

©2008 American Physical Society

Authors & Affiliations

Ana Akrap1,*, Vladan Stevanović2, Mirta Herak3, Marko Miljak3, Neven Barišić1,4, Helmuth Berger1, and László Forró1

  • 1Institut de Physique de la Matière Complexe, EPFL, CH-1015 Lausanne, Switzerland
  • 2Institut Romand de Recherche Numérique en Physique de Matériaux (IRRMA) and Institute of Theoretical Physics (ITP), Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
  • 3Institute of Physics, P.O. Box 304, HR-10000 Zagreb, Croatia
  • 4Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany

  • *ana.akrap@epfl.ch

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Issue

Vol. 78, Iss. 23 — 15 December 2008

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