Low temperature charge ordering versus grain boundary effects in polycrystalline La1-xCaxMnO3 manganites
arXiv:cond-mat/0404438
Abstract
In this communication the enhancement of low temperature magnetoresistance in polycrystalline La1-xCaxMnO3 manganites is discussed. It is shown that so-called grain boundary effects seem to be the simplest and natural explanation of this phenomenon.
9 pages