Publication Type
Journal
Journal Name
Physical Review Letters
Publication Date
Page Number
147205
Volume
106
Issue
14
Abstract
We examined the electronic reconstruction that occurs at the LSMO/STO
interface on epitaxial superlattices by combined magnetotransport measurements, aberration corrected microscopy and x-ray magnetic circular dichroism. We have found a reduced Ti oxidation state resulting from charge transfer at the interface. XMCD evidences magnetic moment at the Ti originated at the superexchange interaction with Mn. This induced magnetic moment at STO controls the bulk magnetic and transport properties of the superlattices when the titanate layer thickness is below 1 nm.
