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Co-Doped (La, Sr)TiO_(3-x) A High Curie Temperature Diluted Magnetic System with Large Spin Polarization (CROSBI ID 125644)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Herranz, Gervasi ; Ranchal, Rocio ; Bibes, Manuel ; Jaffres, Henri ; Jacquet, E. ; Maurice, Jean-Luc ; Bouzehouane, Karim ; Wyczisk, F. ; Tafra, Emil ; Basletić, Mario et al. Co-Doped (La, Sr)TiO_(3-x) A High Curie Temperature Diluted Magnetic System with Large Spin Polarization // Physical review letters, 96 (2006), 2; 027207-1-027207-4. doi: 10.1103/PhysRevLett.96.027207

Podaci o odgovornosti

Herranz, Gervasi ; Ranchal, Rocio ; Bibes, Manuel ; Jaffres, Henri ; Jacquet, E. ; Maurice, Jean-Luc ; Bouzehouane, Karim ; Wyczisk, F. ; Tafra, Emil ; Basletić, Mario ; Hamzić, Amir ; Colliex, C. ; Contour, Jean-Pierre ; Barthelemy, Agnes ; Fert, Albert

engleski

Co-Doped (La, Sr)TiO_(3-x) A High Curie Temperature Diluted Magnetic System with Large Spin Polarization

We report on tunneling magnetoresistance (TMR) experiments that demonstrate the existence of a significant spin polarization in Co-doped (La, Sr)TiO_(3-x) (Co-LSTO), a ferromagnetic diluted magnetic oxide system (DMOS) with high Curie temperature. These TMR experiments have been performed on magnetic tunnel junctions associating Co-LSTO and Co electrodes. Extensive structural analysis of Co-LSTO combining high-resolution transmission electron microscopy and Auger electron spectroscopy excluded the presence of Co clusters in the Co-LSTO layer and thus, the measured ferromagnetism and high spin polarization are intrinsic properties of this DMOS. Our results argue for the DMOS approach with complex oxide materials in spintronics.

spintronics; tunnel magnetoresistance; spin polarization; half-metallic ferromagnets

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Podaci o izdanju

96 (2)

2006.

027207-1-027207-4

objavljeno

0031-9007

10.1103/PhysRevLett.96.027207

Povezanost rada

Fizika

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