Premium
Emerging physics of oxide heterostructures
Author(s) -
Demkov A. A.,
Posadas A.,
Seo H.,
Lee J. K.,
Sai N.
Publication year - 2011
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201147181
Subject(s) - heterojunction , ferromagnetism , condensed matter physics , epitaxy , materials science , molecular beam epitaxy , ferroelectricity , oxide , doping , interface (matter) , ab initio , optoelectronics , nanotechnology , physics , dielectric , quantum mechanics , layer (electronics) , capillary number , composite material , capillary action , metallurgy
We explore novel electronic phenomena that occur at the interface in epitaxial complex oxide heterostructures. We apply ab‐initio theory to predict and analyze the behavior of these heterostructures and use molecular beam epitaxy (MBE) to realize them in practice. Our first system concerns the interface between two insulating oxides, LaAlO 3 /SrTiO 3 and LaAlO 3 /EuO. Formation of a two‐dimensional electron gas is explored and the electrostatic doping mechanism as a result of the macroscopic electric fields in LaAlO 3 is proposed. In the second system, we investigate the possibility of magnetoelectric coupling at a tri‐components ferroelectric/ferromagnetic interface using a Pt/PbTiO 3 /Fe heterostructure as an example. At last we explore the connection between epitaxial strain and interfacial ferromagnetism in SrTiO 3 /LaCoO 3 interface and demonstrate that such structure can be integrated epitaxially with Si (001).