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Title: Atomic and electronic structure of the SrNbO{sub 3}/SrNbO{sub 3.4} interface

We have determined the atomic-scale structure of the SrNbO{sub 3}/SrNbO{sub 3.4} interface and related it to the electronic structure. Experimentally, transmission electron microscopy observations reveal that SrNbO{sub 3} and SrNbO{sub 3.4} show orientation relationships [1{sup ¯}10]{sub SrNbO{sub 3}} // [010]{sub SrNbO{sub 3{sub .{sub 4}}}} and (110){sub SrNbO{sub 3}} // (001){sub SrNbO{sub 3{sub .{sub 4}}}}, and that their interface is coherent and atomically abrupt. Theoretically, this interface is found to be strongly anisotropic in electronic structure, and takes on quasi-one-dimensional nature. We also find that the interface impacts greatly the electron occupation of Nb d orbitals, particularly d{sub z}{sup 2} orbital. The combined study represents a relevant advance in atomically bridging structures to properties of heterointerfaces.
Authors:
; ;  [1] ;  [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [4] ;  [5]
  1. Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)
  2. (China)
  3. Department of Materials, ETH Zürich, Zürich CH-8093 (Switzerland)
  4. (Japan)
  5. IBM Research Division, Zürich Research Laboratory, Rüschlikon CH-8803 (Switzerland)
Publication Date:
OSTI Identifier:
22402390
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 22; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRONIC STRUCTURE; INTERFACES; NIOBIUM OXIDES; STRONTIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY