Stability and electronic properties of LaNiO2/SrTiO3 heterostructures

Infinite-layer nickelate thin films materialize an intriguing new platform for high-temperature unconventional superconductivity, with LaNiO2/SrTiO3 as reference setup. We discuss the relative stability of the elementary interfaces of this system and determine the corresponding electronic band struc...

Full description

Saved in:
Bibliographic Details
Published in:JPhys materials 2020-07, Vol.3 (3)
Main Authors: Bernardini, F, Cano, A
Format: Article
Language:English
Subjects:
Condensed Matter
Cuprates
density functional theory
Heterostructures
High temperature
Interface stability
Materials Science
Nickel
nickelates
Physics
Strongly Correlated Electrons
Strontium titanates
Superconductivity
Thin films
thin films and heterostructures
Unconventional superconductivity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Infinite-layer nickelate thin films materialize an intriguing new platform for high-temperature unconventional superconductivity, with LaNiO2/SrTiO3 as reference setup. We discuss the relative stability of the elementary interfaces of this system and determine the corresponding electronic band structure. We find substantial changes compared to the bulk, in particular in relation to the 5d orbital contributions to the low-energy physics which can be totally replaced by purely Ni-3d flat bands. The d9 configuration characteristic of cuprates can thus be supplemented by an extra interfacial ingredient destabilizing the normal non-superconducting state in these heterostructures.
ISSN:2515-7639
DOI:10.1088/2515-7639/ab9d0f