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Full oxide heterostructure combining a high-Tc diluted ferromagnet with a high-mobility conductor
G. Herranz, M. Basletic, M. Bibes +8
We report on the growth of heterostructures composed of layers of the high-Curie temperature ferromagnet Co-doped (La,Sr)TiO3 (Co-LSTO) with high-mobility SrTiO3 (STO) substrates p…
Combining half-metals and multiferroics into epitaxial heterostructures for spintronics
H. Bea, M. Bibes, M. Sirena +8
We report on the growth of epitaxial bilayers of the La2/3Sr1/3MnO3 (LSMO) half-metallic ferromagnet and the BiFeO3 (BFO) multiferroic, on SrTiO3(001) by pulsed laser deposition. T…
Spinel ferrites: old materials bring new opportunities for spintronics
Ulrike Lueders, Agnes Barthelemy, Manuel Bibes +7
Over the past few years, intensive studies of ultrathin epitaxial films of perovskite oxides have often revealed exciting properties like giant magnetoresistive tunnelling and elec…
Spin-polarized tunneling spectroscopy in tunnel junctions with half-metallic electrodes
M. Bowen, A. Barthélémy, M. Bibes +6
We have studied the magnetoresistance (TMR) of tunnel junctions with electrodes of La2/3Sr1/3MnO3 and we show how the variation of the conductance and TMR with the bias voltage can…
Co-doped (La,Sr)TiO3-d: a high-Curie temperature diluted magnetic system with large spin-polarization
G. Herranz, R. Ranchal, M. Bibes +12
We report on tunneling magnetoresistance (TMR) experiments that demonstrate the existence of a significant spin polarization in Co-doped (La,Sr)TiO3-d (Co-LSTO), a ferromagnetic di…
Spin-dependent tunneling through high-k LaAlO3
V. Garcia, M. Bibes, J. -L. Maurice +4
We report on the use of the LaAlO3 (LAO) high-k dielectric as a tunnel barrier in magnetic tunnel junctions. From tunnel magnetoresistance (TMR) measurements on epitaxial La2/3Sr1/…