Chemical pressure-induced ferromagnetism and stabilization of the metallic state in Ba1-xSrxVS3 (CROSBI ID 740421)
Prilog sa skupa u časopisu | izvorni znanstveni rad
Podaci o odgovornosti
Gauzzi, A. ; Licci, F. ; Barišić, Neven ; Calestani, G.L. ; Bolzoni, F. ; Gilioli, E. ; Marezio, M. ; Sanna, A. ; Franchini, C. ; Forro, Laszlo
engleski
Chemical pressure-induced ferromagnetism and stabilization of the metallic state in Ba1-xSrxVS3
Measurements of magnetization and of resistivity under pressure on Ba1-xSrxVS3 single crystals show that Sr-induced chemical pressure progressively weakens the antiferromagnetic correlations responsible for the metal-insulator transition. The antiferromagnetic ordering temperature, TX = 30 K at x = 0, vanishes at x = 0.08. At larger x, a ferromagnetic order appears with TC = 21.5 K at x = 0.18. The key-parameter favoring the metallic state is found to be the compression of the VS6 octahedra and we predict a metallic state at 0 K for a V– S distance of 2.33 Å ; ; . The stabilization effect of the metallic state provided by the chemical pressure is supported by first principles band structure calculations performed by using the Vienna ab initio simulation package (VASP) within the projector augmented– wave (PAW) method in the local density approximation (LDA) + U scheme.
metal-insulator transition; chemical pressure effects; magnetic properties
Rad je prezentiran na skupu Fourth International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials (New3 SC-4).
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Podaci o prilogu
3503-3508.
2003.
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objavljeno
Podaci o matičnoj publikaciji
International journal of modern physics B
0217-9792
Podaci o skupu
Nepoznat skup
ostalo
29.02.1904-29.02.2096