Intrinsic magnetism in superconducting infinite-layer nickelates

Superconducting Instabilities in Strongly-Correlated Infinite-Layer Nickelates

“…36, which is the basis of all further analysis in this work. Magnetic fluctuations.-The existence of intrinsic magnetism and substantial magnetic fluctuations has been recently revealed by several experimental probes [14,38,44]. These findings highlight the role of magnetic fluctuations in the infinite-layer nickelates, and motivate theoretical studies both of these fluctuations themselves, and their implication for SC pairing.…”

“…At the normal-state level, several important differences between the correlated electronic structure of cuprates and infinite-layer nickelates have also been identified. For the latter systems, there is no clear evidence for long-range antiferromagnetic (AFM) order [12][13][14], the doping-dependent Hall data point to a two-band scenario, and the SC dome is sandwiched between weaklyinsulating doping regions [4,15]. Moreover, the chargetransfer energy is larger for the nickelates [16][17][18], locating them in a competing Mott-Hubbard vs. chargetransfer regime.…”

Characterizing the superconducting instability in a two-orbital $d$-$s$ model: insights to infinite-layer nickelate superconductors

“…Undoubtedly, the most important question is the pairing symmetry and mechanism in this new family of superconductors and furthermore its similarity and difference from other transition metal based superconductors like Cuand Fe-based compounds. For example, given that the parent compound of infinite-layer NdNiO 2 is discovered not to host the long-range magnetic order [7][8][9][10][11][12][13][14][15] in spite of magnetic correlations [16][17][18][19][20] , whether the debated spin-fluctuation scenario for cuprate superconductors also applies for the infinite-layer nickelates is an intriguing question.…”