Naslov
Transport and magnetic properties of BaVSe3

Autori
Akrap, Ana ; Stevanović, Vladan ; Herak, Mirta ; Miljak, Marko ; Barišić, Neven ; Berger, Helmuth ; Forro, Laszlo

Izvornik
Physical Review B - Condensed Matter and Materials Physics (1098-0121) 78 (2008), 23; 235111-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
band structure; barium compounds; density functional theory; electrical resistivity; ferromagnetic materials; ferromagnetic-paramagnetic transitions; galvanomagnetic effects; magnetic moments; magnetic susceptibility; paramagnetic materials; thermoelectric power; vanadium compounds

Sažetak
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 µ eff=1.40µ B. 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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