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The effect of oxygen vacancies on the electronic phase transition in La1/3Sr2/3FeO3 films
Journal article   Open access   Peer reviewed

The effect of oxygen vacancies on the electronic phase transition in La1/3Sr2/3FeO3 films

Rebecca J. Sichel-Tissot, Robert C. Devlin, Philip J. Ryan, Jong-Woo Kim and Steven J. May
Applied physics letters, v 103(21)
18 Nov 2013
DOI: https://doi.org/10.1063/1.4833276
url
https://www.zora.uzh.ch/id/eprint/72307/1/20130109134315_merlin-id_7819.pdfView
Accepted (AM)Open Access (License Unspecified),  Open

Abstract

Physical Sciences Physics Physics, Applied Science & Technology
Synchrotron x-ray diffraction and electrical resistivity were used to probe the electronic phase transition in two strained La1/3Sr2/3FeO3 films on (001) SrTiO3 substrates, one nominally stoichiometric and one with a higher concentration of oxygen vacancies. We present evidence that oxygen vacancies inhibit the size of charge ordered domains and reduce the abruptness of the phase transition. Additionally, the correlation lengths measured from (4/3 4/3 4/3) peaks, arising from charge disproportionation, increase rapidly across the transition, suggesting that the resistivity increase at the transition temperature is caused by the nucleation and growth of charge ordered domains. (C) 2013 AIP Publishing LLC.

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Physics, Applied
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