Evidence of direct correlation between out-of-plane lattice parameter and metal-insulator transition temperature in oxygen-depleted manganite thin films

We report on the role of oxygen content alone on structural and transport properties of La 0.65 Sr 0.35 MnO 3− δ (LSMO) thin films. Identical films were deposited side-by-side during a single deposition run and subsequently post-annealed separately in vacuum to systematically vary the oxygen content...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2012-01, Vol.100 (4), p.042404-042404-3
Main Authors: Orgiani, P., Petrov, A. Yu, Ciancio, R., Galdi, A., Maritato, L., Davidson, B. A.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report on the role of oxygen content alone on structural and transport properties of La 0.65 Sr 0.35 MnO 3− δ (LSMO) thin films. Identical films were deposited side-by-side during a single deposition run and subsequently post-annealed separately in vacuum to systematically vary the oxygen content. All films remained coherently strained to the SrTiO 3 substrate, with no broadening of rocking curve widths after post-anneal. As oxygen content decreases, the LSMO unit cell expands while the metal-insulator transition temperature T MI decreases. A linear correlation between the out-of-plane lattice parameter and the metal-insulator transition temperature was observed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3676268