Kigook Song, Robert D. Miller, et al.
Macromolecules
We have used a self-aligned lithographic process to fabricate magnetic tunnel junctions of (Formula presented)(Formula presented)Mn(Formula presented) down to a few micrometers in size. We have obtained a magnetoresistance ratio as large as 83% at low magnetic fields of a few tens of Oe, which correspond to the coercivities of the magnetic layers. Transmission-electron-microscopy analysis has revealed the heteroepitaxial growth of the trilayer junction structure, (Formula presented)(Formula presented)Mn(Formula presented)/SrTi(Formula presented)/(Formula presented)Mn(Formula presented). We have observed current-voltage characteristics typical of electron tunneling across an insulating barrier. The large magnetoresistance is likely due to the nearly half-metallic electronic structure of the manganites. © 1996 The American Physical Society.
Kigook Song, Robert D. Miller, et al.
Macromolecules
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
Ellen J. Yoffa, David Adler
Physical Review B
T. Schneider, E. Stoll
Physical Review B