| Autor: |
G, Herranz, R, Ranchal, M, Bibes, H, Jaffrès, E, Jacquet, J-L, Maurice, K, Bouzehouane, F, Wyczisk, E, Tafra, M, Basletic, A, Hamzic, C, Colliex, J-P, Contour, A, Barthélémy, A, Fert |
| Rok vydání: |
2005 |
| Zdroj: |
Physical review letters. 96(2) |
| ISSN: |
0031-9007 |
| Popis: |
We report on tunneling magnetoresistance (TMR) experiments that demonstrate the existence of a significant spin polarization in Co-doped (La, Sr)TiO(3-delta) (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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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