Back to Search
Start Over
Ultrafast modification of the polarity at LaAlO3/SrTiO3 interfaces.
- Source :
-
Physical Review B . 1/15/2018, Vol. 97 Issue 3, p1-1. 1p. - Publication Year :
- 2018
-
Abstract
- Oxide growth with semiconductorlike accuracy has led to atomically precise thin films and interfaces that exhibit a plethora of phases and functionalities not found in the oxide bulk material. This has yielded spectacular discoveries such as the conducting, magnetic, and even superconducting LaAlO3/SrTiO3 interfaces separating two prototypical insulating perovskite materials. All these investigations, however, consider the static state at the interface, although studies on fast oxide interface dynamics would introduce a powerful degree of freedom to understanding the nature of the LaAlO3/SrTiO3 interface state. Here, we show that the polarization state at the LaAlO3/SrTiO3 interface can be optically enhanced or attenuated within picoseconds. Our observations are explained by a model based on charge propagation effects in the interfacial vicinity and transient polarization buildup at the interface. [ABSTRACT FROM AUTHOR]
- Subjects :
- *POLARITY (Physics)
*INTERFACES (Physical sciences)
*LANTHANUM compounds
Subjects
Details
- Language :
- English
- ISSN :
- 24699950
- Volume :
- 97
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Physical Review B
- Publication Type :
- Academic Journal
- Accession number :
- 127939907
- Full Text :
- https://doi.org/10.1103/PhysRevB.97.035438