Abstract
First-principles calculations predict the existence of a spin-polarized two-dimensional electron gas (2DEG) at the LaO/EuO interface in a heterostructure. This polar interface favors electron doping into the conduction bands resulting in a 2DEG formed at the interface. Due to the exchange splitting of the states, the 2DEG is spin polarized below the Curie temperature of EuO. The predicted mechanism for the formation of a spin-polarized 2DEG at the interface between polar and ferromagnetic insulators may provide a robust magnetism of the 2DEG which is interesting for spintronics applications.
- Received 27 March 2009
DOI:https://doi.org/10.1103/PhysRevB.79.212408
©2009 American Physical Society