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Title: Engineering the oxygen coordination in digital superlattices

Abstract

The oxygen sublattice in the complex oxides is typically composed of corner-shared polyhedra, with transition metals at their centers. The electronic and chemical properties of the oxide depend on the type and geometric arrangement of these polyhedra, which can be controlled through epitaxial synthesis. Here, we use oxide molecular beam epitaxy to create SrCoOx:SrTiO3 superlattices with tunable oxygen coordination environments and sublattice geometries. Using soft X-ray spectroscopy, we find that the chemical state of Co can be varied with the polyhedral arrangement, demonstrating a new strategy for achieving unique electronic properties in the transition metal oxides.

Authors:
 [1];  [1];  [2];  [2];  [3];  [4]
  1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA; Department of Materials Science, Northwestern University, Evanston, Illinois 60202, USA
  2. X-Ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
  3. Department of Materials Science, Northwestern University, Evanston, Illinois 60202, USA
  4. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1415608
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL Materials; Journal Volume: 5; Journal Issue: 12
Country of Publication:
United States
Language:
English
Subject:
Oxides; Superlattices; X-ray scattering; X-ray spectroscopy

Citation Formats

Cook, Seyoung, Andersen, Tassie K., Hong, Hawoong, Rosenberg, Richard A., Marks, Laurence D., and Fong, Dillon D.. Engineering the oxygen coordination in digital superlattices. United States: N. p., 2017. Web. doi:10.1063/1.5007663.
Cook, Seyoung, Andersen, Tassie K., Hong, Hawoong, Rosenberg, Richard A., Marks, Laurence D., & Fong, Dillon D.. Engineering the oxygen coordination in digital superlattices. United States. doi:10.1063/1.5007663.
Cook, Seyoung, Andersen, Tassie K., Hong, Hawoong, Rosenberg, Richard A., Marks, Laurence D., and Fong, Dillon D.. Fri . "Engineering the oxygen coordination in digital superlattices". United States. doi:10.1063/1.5007663.
@article{osti_1415608,
title = {Engineering the oxygen coordination in digital superlattices},
author = {Cook, Seyoung and Andersen, Tassie K. and Hong, Hawoong and Rosenberg, Richard A. and Marks, Laurence D. and Fong, Dillon D.},
abstractNote = {The oxygen sublattice in the complex oxides is typically composed of corner-shared polyhedra, with transition metals at their centers. The electronic and chemical properties of the oxide depend on the type and geometric arrangement of these polyhedra, which can be controlled through epitaxial synthesis. Here, we use oxide molecular beam epitaxy to create SrCoOx:SrTiO3 superlattices with tunable oxygen coordination environments and sublattice geometries. Using soft X-ray spectroscopy, we find that the chemical state of Co can be varied with the polyhedral arrangement, demonstrating a new strategy for achieving unique electronic properties in the transition metal oxides.},
doi = {10.1063/1.5007663},
journal = {APL Materials},
number = 12,
volume = 5,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 2017},
month = {Fri Dec 01 00:00:00 EST 2017}
}