Limits to the strain engineering of layered square-planar nickelate thin films.

Autor: Ferenc Segedin D; Department of Physics, Harvard University, Cambridge, MA, USA., Goodge BH; School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA.; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA., Pan GA; Department of Physics, Harvard University, Cambridge, MA, USA., Song Q; Department of Physics, Harvard University, Cambridge, MA, USA., LaBollita H; Department of Physics, Arizona State University, Tempe, AZ, USA., Jung MC; Department of Physics, Arizona State University, Tempe, AZ, USA., El-Sherif H; The Rowland Institute, Harvard University, Cambridge, MA, USA., Doyle S; Department of Physics, Harvard University, Cambridge, MA, USA., Turkiewicz A; Department of Physics, Harvard University, Cambridge, MA, USA., Taylor NK; School of Engineering and Applied Science, Harvard University, Cambridge, MA, USA., Mason JA; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA., N'Diaye AT; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA., Paik H; Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University, Ithaca, NY, USA.; School of Electrical and Computer Engineering, University of Oklahoma, Norman, OK, USA., El Baggari I; The Rowland Institute, Harvard University, Cambridge, MA, USA., Botana AS; Department of Physics, Arizona State University, Tempe, AZ, USA., Kourkoutis LF; School of Applied and Engineering Physics, Cornell University, Ithaca, NY, USA.; Kavli Institute at Cornell for Nanoscale Science, Cornell University, Ithaca, NY, USA., Brooks CM; Department of Physics, Harvard University, Cambridge, MA, USA., Mundy JA; Department of Physics, Harvard University, Cambridge, MA, USA. mundy@fas.harvard.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Mar 16; Vol. 14 (1), pp. 1468. Date of Electronic Publication: 2023 Mar 16.
DOI: 10.1038/s41467-023-37117-4
Abstrakt: The layered square-planar nickelates, Nd n+1 Ni n O 2n+2 , are an appealing system to tune the electronic properties of square-planar nickelates via dimensionality; indeed, superconductivity was recently observed in Nd 6 Ni 5 O 12 thin films. Here, we investigate the role of epitaxial strain in the competing requirements for the synthesis of the n = 3 Ruddlesden-Popper compound, Nd 4 Ni 3 O 10 , and subsequent reduction to the square-planar phase, Nd 4 Ni 3 O 8 . We synthesize our highest quality Nd 4 Ni 3 O 10 films under compressive strain on LaAlO 3 (001), while Nd 4 Ni 3 O 10 on NdGaO 3 (110) exhibits tensile strain-induced rock salt faults but retains bulk-like transport properties. A high density of extended defects forms in Nd 4 Ni 3 O 10 on SrTiO 3 (001). Films reduced on LaAlO 3 become insulating and form compressive strain-induced c-axis canting defects, while Nd 4 Ni 3 O 8 films on NdGaO 3 are metallic. This work provides a pathway to the synthesis of Nd n+1 Ni n O 2n+2 thin films and sets limits on the ability to strain engineer these compounds via epitaxy.
(© 2023. The Author(s).)
Databáze: MEDLINE
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