Stability and electronic properties of the LaNiO${}_2$/SrTiO${}_3$ interface

Abstract

Infinite-layer nickelate thin films materialize an intriguing new platform for high-temperature unconventional superconductivity, with LaNiO${}_2$/SrTiO${}_3$ 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 5$d$ orbital contributions to the low-energy physics which can be totally replaced by purely Ni-3$d$ flat bands. The $d^9$ configuration characteristic of cuprates can thus be supplemented by an extra interfacial ingredient destabilizing the normal non-superconducting state in these heterostructures.

arXiv comment6 pages, 2 tables, 3 figures + Supplemental Material. v2: updated refs., extra figure + improved discussion of interfacial structure. v3: new appendix

References in corpus (11)

• High-temperature surface superconductivity in topological flat-band systems
• Infinite Layer LaNiO(2): Ni(1+)is not Cu(2+)
• Self-doped Mott insulator for parent compounds of nickelate superconductors
• Robust $d_{x^2-y^2}$-wave superconductivity of infinite-layer nickelates
• Mimicking cuprates: large orbital polarization in a metallic square-planar nickelate
• Topotactic hydrogen in nickelate superconductors and akin infinite-layer oxides ABO2
• Origin of the material dependence of $T_c$ in the single-layered cuprates
• Electronic structure induced reconstruction and magnetic ordering at the LaAlO${}_3|$SrTiO${}_3$ interface
• Electron doped layered nickelates: spanning the phase diagram of the cuprates
• Ab initio many-body GW correlations in the electronic structure of LaNiO${}_2$
• Magnetic penetration depth and $T_c$ in superconducting nickelates

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