Atomically Resolved Electronic States and Correlated Magnetic Order at Termination Engineered Complex Oxide Heterointerfaces

Journal Article

Huang, B.-C., P. Yu, Y.H. Chu, C.-S. Chang, Ramamoorthy Ramesh, R.E. Dunin-Borkowski, P. Ebert, Y.-P. Chiu

10.1021/acsnano.7b06004

We map electronic states, band gaps, and interface-bound charges at termination-engineered BiFeO3/La0.7Sr0.3MnO3 interfaces using atomically resolved cross-sectional scanning tunneling microscopy. We identify a delicate interplay of different correlated physical effects and relate these to the ferroelectric and magnetic interface properties tuned by engineering the atomic layer stacking sequence at the interfaces. This study highlights the importance of a direct atomically resolved access to electronic interface states for understanding the intriguing interface properties in complex oxides. © 2018 American Chemical Society.

ACS Nano

12

2018

19360851

Ramesh Lab