Tunneling magnetoresistance with positive and negative sign in La 0

@inproceedings{Marn2007TunnelingMW,
  title={Tunneling magnetoresistance with positive and negative sign in La 0},
  author={Iv{\'a}n Jes{\'u}s Vera Mar{\'u}n and Froukje M Postma and J. Cock Lodder and Ron Jansen},
  year={2007}
}
We have investigated the effects of modification of the SrTiO3/Co interface as well as the SrTiO3 barrier on the tunnel magnetoresistance TMR of La0.67Sr0.33MnO3/SrTiO3/Co junctions. Modification was realized by the introduction of one atomic layer of either TiO2 or SrO at the SrTiO3/Co interface. Barriers with different oxygen content were also studied. In these structures we have observed positive as well as negative TMR, with a trend towards positive TMR for junctions with interfacial SrO… CONTINUE READING