The origin of high transport spin polarization in La${}_{0.7}$Sr${}_{0.3}$MnO${}_3$: direct evidence for minority spin states

B. Nadgorny, I. I. Mazin, M. Osofsky +7

Using the point contact Andreev reflection technique, we have carried out a systematic study of the spin polarization in the colossal magnetoresistive manganite, La${}_{0.7}$Sr$_{0.3…