Magnetic Properties and Pseudogap Formation in Infinite-Layer Nickelates: Insights From the Single-Band Hubbard Model

Klett M, Hansmann P, Schäfer T (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Frontiers in Physics Frontiers Media

Book Volume: 10

Article Number: 834682

DOI: 10.3389/fphy.2022.834682

Abstract

We study the magnetic and spectral properties of a single-band Hubbard model for the infinite-layer nickelate compound LaNiO2. As spatial correlations turn out to be the key ingredient for understanding its physics, we use two complementary extensions of the dynamical mean-field theory to take them into account: the cellular dynamical mean-field theory and the dynamical vertex approximation. Additionally to the systematic analysis of the doping dependence of the non-Curie-Weiss behavior of the uniform magnetic susceptibility, we provide insight into its relation to the formation of a pseudogap regime by the calculation of the one-particle spectral function and the magnetic correlation length. The latter is of the order of a few lattice spacings when the pseudogap opens, indicating a strong-coupling pseudogap formation in analogy to cuprates.

Authors with CRIS profile

Philipp Hansmann Professur für Theoretische Physik mit dem Schwerpunkt Molekulare Materialien

Involved external institutions

Max-Planck-Institut für Festkörperforschung DE Germany (DE)

How to cite

APA:

Klett, M., Hansmann, P., & Schäfer, T. (2022). Magnetic Properties and Pseudogap Formation in Infinite-Layer Nickelates: Insights From the Single-Band Hubbard Model. Frontiers in Physics, 10. https://doi.org/10.3389/fphy.2022.834682

MLA:

Klett, Marcel, Philipp Hansmann, and Thomas Schäfer. "Magnetic Properties and Pseudogap Formation in Infinite-Layer Nickelates: Insights From the Single-Band Hubbard Model." Frontiers in Physics 10 (2022).

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