TY - JOUR
T1 - Atomistic geometry and bonding characteristics at the Sr 2FeTaO6/SrTiO3 interface
AU - Lv, Shuhui
AU - Saito, Mitsuhiro
AU - Wang, Zhongchang
AU - Chakraverty, Suvankar
AU - Kawasaki, Masashi
AU - Ikuhara, Yuichi
N1 - Funding Information:
This work was conducted in the Research Hub for Advanced Nano Characterization and “Nanotechnology Platform” (Project No. 12024046) at the University of Tokyo supported by the MEXT of Japan. S.L. thanks Japan Society for the Promotion of Science (JSPS) program for the financial support. Z.W. appreciates financial supports from a Grant-in-Aid for Young Scientists (A) (Grant No. 24686069) and a Challenging Exploratory Research (Grant No. 24656376). S.C. and M.K. acknowledge support by the JSPS through the “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program).” M. K. thanks JSPS Grant-in-Aid for Scientific Research (S) (No. 24226002). Calculations were carried out at the ISSP at the University of Tokyo.
PY - 2013/6/3
Y1 - 2013/6/3
N2 - Oxide heterointerfaces with broken translational symmetry offer a fertile ground for exploring fascinating physical properties that are absent in bulk constituents. Here, we apply advanced transmission electron microscopy to the Sr2FeTaO6/SrTiO3 interface and elucidate that the deposited Sr2FeTaO6 thin film bonds directly to the SrTiO3 substrate in an epitaxial, coherent, and atomically abrupt way. Combined with density-functional-theory calculations, we determine the explicit interface atomistic structure, the exact valence state of transition metals, the covalent interfacial bonding nature, and identify the antiferromagnetic superexchange magnetic coupling path between Fe ions as Fe-O-Ta-O-Fe.
AB - Oxide heterointerfaces with broken translational symmetry offer a fertile ground for exploring fascinating physical properties that are absent in bulk constituents. Here, we apply advanced transmission electron microscopy to the Sr2FeTaO6/SrTiO3 interface and elucidate that the deposited Sr2FeTaO6 thin film bonds directly to the SrTiO3 substrate in an epitaxial, coherent, and atomically abrupt way. Combined with density-functional-theory calculations, we determine the explicit interface atomistic structure, the exact valence state of transition metals, the covalent interfacial bonding nature, and identify the antiferromagnetic superexchange magnetic coupling path between Fe ions as Fe-O-Ta-O-Fe.
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U2 - 10.1063/1.4809536
DO - 10.1063/1.4809536
M3 - Article
AN - SCOPUS:84879126258
VL - 102
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 22
M1 - 221602
ER -