| Literature DB >> 11384504 |
E Granado1, N O Moreno, H Martinho, A García, J A Sanjurjo, I Torriani, C Rettori, J J Neumeier, S B Oseroff.
Abstract
The exchange interactions in polycrystalline samples of Ca1-xLaxMnO3 (0.00< or =x< or =0.05) are studied by means of Raman scattering and electron paramagnetic resonance. Dramatic reductions in the spin-phonon interactions and magnetic correlations are observed for La doping levels as small as approximately 2%-3%. These results show that the charge carriers play an important role in the overall exchange coupling in the electron-doped manganites, even at very low doping levels.Entities:
Year: 2001 PMID： 11384504 DOI： 10.1103/PhysRevLett.86.5385
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161