Layered low-valence nickelates have long been considered as close analogs to cuprates and their potential for superconductivity has been intensively investigated. The realization of this promise came with the recent discovery of superconductivity in hole-doped RNiO2 (where R = rare-earth element). In such systems with the infinite-layer structure, the Ni ions feature an unconventional oxidation state (nominally 1+) that provides the same starting 3d9 electronic configuration as Cu2+ in isostructural cuprate superconductors. However, infinite-layer nickelates display important differences with respect to cuprates in terms of their electronic and magnetic properties. The combination of these traits defines the new physics of this material class, and more broadly of the layered low-valence nickelates family. Furthermore, the discovery may have opened up a novel route for identifying the key parameters at the heart of high-temperature superconductivity.
This Research Topic is centered around the recent discovery of superconductivity in infinite-layer nickelates. The Research Topic aims at reporting and summarizing the latest developments in the field of infinite-layer and related low-valence nickelate compounds. Moreover, a themed platform for sharing the latest theoretical insights and experimental developments is provided.
We seek submissions of research articles in the form of Original Research, Reviews and Perspectives on the following topics:
· Calculations and theoretical understanding of the electronic structure and magnetic correlations
· Electronic structure and magnetic excitations probed by advanced scattering/spectroscopic methods
· Relations to other unconventional superconductors, such as cuprates and iron pnictides
· Relations to other low-valence nickelates, such as higher order Ruddlesden Popper phases
· Transport studies of the normal and superconducting state properties
· Fermiology
· Recent advances in the growth and reduction of films and heterostructures
· Synthesis of bulk or bulk-like samples
Layered low-valence nickelates have long been considered as close analogs to cuprates and their potential for superconductivity has been intensively investigated. The realization of this promise came with the recent discovery of superconductivity in hole-doped RNiO2 (where R = rare-earth element). In such systems with the infinite-layer structure, the Ni ions feature an unconventional oxidation state (nominally 1+) that provides the same starting 3d9 electronic configuration as Cu2+ in isostructural cuprate superconductors. However, infinite-layer nickelates display important differences with respect to cuprates in terms of their electronic and magnetic properties. The combination of these traits defines the new physics of this material class, and more broadly of the layered low-valence nickelates family. Furthermore, the discovery may have opened up a novel route for identifying the key parameters at the heart of high-temperature superconductivity.
This Research Topic is centered around the recent discovery of superconductivity in infinite-layer nickelates. The Research Topic aims at reporting and summarizing the latest developments in the field of infinite-layer and related low-valence nickelate compounds. Moreover, a themed platform for sharing the latest theoretical insights and experimental developments is provided.
We seek submissions of research articles in the form of Original Research, Reviews and Perspectives on the following topics:
· Calculations and theoretical understanding of the electronic structure and magnetic correlations
· Electronic structure and magnetic excitations probed by advanced scattering/spectroscopic methods
· Relations to other unconventional superconductors, such as cuprates and iron pnictides
· Relations to other low-valence nickelates, such as higher order Ruddlesden Popper phases
· Transport studies of the normal and superconducting state properties
· Fermiology
· Recent advances in the growth and reduction of films and heterostructures
· Synthesis of bulk or bulk-like samples
