Abstract:
:Samarium nickelate (SmNiO3) thin films were successfully synthesized on LaAlO3 and SrTiO3 substrates using pulsed-laser deposition. The Mott metal-insulator (MI) transition of the thin films is sensitive to epitaxial strain and strain relaxation. Once the strain changes from compressive to tensile, the transition temperature of the SmNiO3 samples shifts to slightly higher values. The optical conductivity reveals the strong dependence of the Drude spectral weight on the strain relaxation. Actually, compressive strain broadens the bandwidth. In contrast, tensile strain causes the effective number of free carriers to reduce which is consistent with the d-band narrowing.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Torriss B,Margot J,Chaker Mdoi
10.1038/srep40915subject
Has Abstractpub_date
2017-01-18 00:00:00pages
40915issn
2045-2322pii
srep40915journal_volume
7pub_type
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