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First principles study of [111]-oriented epitaxially strained Rare-Earth Nickelate NdNiO3 [dataset] Open Access

Density functional theory is used to investigate the effect of biaxial strain on the structural, electronic and magnetic properties of [111]-oriented NdNiO$_3$, as a representative of the rare-earth perovskites that undergo metal-to-insulator transitions. We find that this constraint on the system induces unique structural phase transitions not previously observed under the well-studied bulk or [001]-oriented strained systems. We also report unique electronic behaviour, including amplification of the electronic band-gap with tensile strain, and insulating, charge-ordered phases with non-orthorhombic tilt patterns. To provide clarity to the trends we observe, we also investigate the coupling between the breathing mode and strain, where we observe certain strains to directly favour and disfavour the creation of the breathing mode (and thus the associated charge-ordering). The amplification of the band gap with strain is understood in terms of a cooperative coupling between the elastic constraint and octahedral breathing, which expands on the previously reported triggered mechanism mediated by octahedral tilting.

Descriptions

Resource type

Dataset

Contributors

Creator: Lione, Alexander ¹
Data collector: Lione, Alexander ¹

¹ Durham University, UK

Funder

Engineering and Physical Sciences Research Council
Fonds National de la Recherche Luxembourg

Research methods

Other description

Keyword

Nickelates
Metal insulator transition
Strain engineering
First principles calculations

Subject

Condensed matter

Location

Language

Cited in

Identifier

ark:/32150/r1xd07gs71z
doi:10.15128/r1xd07gs71z

Rights

Creative Commons Attribution 4.0 International (CC BY)

Publisher

Durham University

Date Created

File Details

Depositor

N. Bristowe

Date Uploaded

25 July 2025, 13:07:11

Date Modified

25 July 2025, 15:07:15

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File format: x-gzip (GZIP Format, GZIP)

Mime type: application/x-gzip

File size: 84012

Last modified: 2025:07:25 14:53:23+01:00

Filename: NNO_111_paper_file_list.tar.gz

Original checksum: 98d6745e71198c5551c84eef6ac0de2f