Probing Interfacial Electronic Structures in Atomic Layer LaMnO3 and SrTiO3 Superlattices (pages 1156–1160)
Amish B. Shah, Quentin M. Ramasse, Xiaofang Zhai, Jian Guo Wen, Steve J. May, Ivan Petrov, Anand Bhattacharya, Peter Abbamonte, James N. Eckstein and Jian-Min Zuo
Version of Record online: 10 FEB 2010 | DOI: 10.1002/adma.200904198
The interfacial electronic structure characterization of a m×(LaMnO3)/n×(SrTiO3) superlattice based on scanning transmission electron microscopy and electron energy loss spectroscopy. Evidence of interfacial band alignment and electron transfer are presented based on the observation of O K edge of individual transition metal and oxygen atomic columns. Electron probe aberration correction was essential for the high spatial resolution mapping of interfacial electronic states.