Identifying Topological Superconductivity in 2D Transition-Metal Dichalcogenides

Lane, Christopher; Zhu, Jian-Xin

doi:10.48550/arxiv.2204.08082

Cited by 1 publication

(3 citation statements)

References 77 publications

(104 reference statements)

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“…For LaNiO 2 , the full manifolds of Ni-3d, La-5d, and La-4f states were included in generating the Wannier functions. The response functions were evaluated over a 51 × 51 × 51 kmesh at 0.001 K, using the 4 bands at the Fermi level in the sum over bands in the Lindhard susceptibility, along with a finite broadening of 0.005 eV [52,53].…”

Section: Methodsmentioning

confidence: 99%

“…Our RPA-type calculations are restricted to considering only local interactions similar to the multiorbital Hubbard model [54] as presented in Ref. 52. The charge and spin response (δρ) of the system to an infinitesimal perturbing source field (δπ) is given by a generalized RPA-type matrix equation,…”

Section: Methodsmentioning

confidence: 99%

“…See Ref. 52 for details. Here we used a critical on-site Coulomb potential strength of 1.22 eV to access the leading Stoner instability of the system.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Peierls distortion driven multi-orbital origin of charge density waves in the undoped infinite-layer nickelate

Zhang¹,

Lane²,

Nokelainen³

et al. 2022

Preprint

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Recent discovery of superconductivity in the nickelates has ignited renewed theoretical and experimental interest in the role of electronic correlations in their properties. Here, based on in-depth first-principles and many-body perturbation theory modeling, we show that the parent (undoped) compound of the nickelate family, LaNiO2, hosts competing low energy phases, unlike the undoped cuprates but similar to the case of the doped cuprates. We also show the existence of flat bands near the Fermi level, stemming from the Ni-3d z 2 orbitals, that are found to persist across the various predicted low-energy phases of the nickelates. Our study gives insight into the microscopic origin of electronic inhomogeneity and nematicity and lack of long-range order in the nickelates.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%