  We review colossal magnetoresistance in single phase manganites, as related
to the field sensitive spin charge interactions and phase separation; the
rectifying property and negative/positive magnetoresistance in
manganite/Nb:SrTiO3 pn junctions in relation to the special interface
electronic structure; magnetoelectric coupling in manganite/ferroelectric
structures that takes advantage of strain, carrier density, and magnetic field
sensitivity; tunneling magnetoresistance in tunnel junctions with dielectric,
ferroelectric, and organic semiconductor spacers using the fully spin polarized
nature of manganites; and the effect of particle size on magnetic properties in
manganite nanoparticles
