Strong Superexchange in a d9-δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering

J. Q. Lin; P. Villar Arribi; G. Fabbris; A. S. Botana; D. Meyers; H. Miao; Y. Shen; D. G. Mazzone; J. Feng; S. G. Chiuzbǎian; A. Nag; A. C. Walters; M. García-Fernández; Ke Jin Zhou; J. Pelliciari; I. Jarrige; J. W. Freeland; Junjie Zhang; J. F. Mitchell; V. Bisogni; X. Liu; M. R. Norman; M. P.M. Dean

doi:10.1103/PhysRevLett.126.087001

Strong Superexchange in a d9-δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering

J. Q. Lin, P. Villar Arribi, G. Fabbris, A. S. Botana, D. Meyers, H. Miao, Y. Shen, D. G. Mazzone, J. Feng, S. G. Chiuzbǎian, A. Nag, A. C. Walters, M. García-Fernández, Ke Jin Zhou, J. Pelliciari, I. Jarrige, J. W. Freeland, Junjie Zhang, J. F. Mitchell, V. BisogniX. Liu, M. R. Norman, M. P.M. Dean

Physics

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Abstract

The discovery of superconductivity in a d9-δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9-1/3 trilayer nickelates R4Ni3O8 (where R=La, Pr) and associated theoretical modeling. A magnon energy scale of ∼80 meV resulting from a nearest-neighbor magnetic exchange of J=69(4) meV is observed, proving that d9-δ nickelates can host a large superexchange. This value, along with that of the Ni-O hybridization estimated from our O K-edge data, implies that trilayer nickelates represent an intermediate case between the infinite-layer nickelates and the cuprates. Layered nickelates thus provide a route to testing the relevance of superexchange to nickelate superconductivity.

Original language	English (US)
Article number	087001
Journal	Physical Review Letters
Volume	126
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.126.087001
State	Published - Feb 22 2021

ASJC Scopus subject areas

General Physics and Astronomy

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Lin, J. Q., Villar Arribi, P., Fabbris, G., Botana, A. S., Meyers, D., Miao, H., Shen, Y., Mazzone, D. G., Feng, J., Chiuzbǎian, S. G., Nag, A., Walters, A. C., García-Fernández, M., Zhou, K. J., Pelliciari, J., Jarrige, I., Freeland, J. W., Zhang, J., Mitchell, J. F., ... Dean, M. P. M. (2021). Strong Superexchange in a d9-δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering. Physical Review Letters, 126(8), Article 087001. https://doi.org/10.1103/PhysRevLett.126.087001

Lin, JQ, Villar Arribi, P, Fabbris, G, Botana, AS, Meyers, D, Miao, H, Shen, Y, Mazzone, DG, Feng, J, Chiuzbǎian, SG, Nag, A, Walters, AC, García-Fernández, M, Zhou, KJ, Pelliciari, J, Jarrige, I, Freeland, JW, Zhang, J, Mitchell, JF, Bisogni, V, Liu, X, Norman, MR & Dean, MPM 2021, 'Strong Superexchange in a d9-δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering', Physical Review Letters, vol. 126, no. 8, 087001. https://doi.org/10.1103/PhysRevLett.126.087001

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abstract = "The discovery of superconductivity in a d9-δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9-1/3 trilayer nickelates R4Ni3O8 (where R=La, Pr) and associated theoretical modeling. A magnon energy scale of ∼80 meV resulting from a nearest-neighbor magnetic exchange of J=69(4) meV is observed, proving that d9-δ nickelates can host a large superexchange. This value, along with that of the Ni-O hybridization estimated from our O K-edge data, implies that trilayer nickelates represent an intermediate case between the infinite-layer nickelates and the cuprates. Layered nickelates thus provide a route to testing the relevance of superexchange to nickelate superconductivity.",

author = "Lin, {J. Q.} and {Villar Arribi}, P. and G. Fabbris and Botana, {A. S.} and D. Meyers and H. Miao and Y. Shen and Mazzone, {D. G.} and J. Feng and Chiuzbǎian, {S. G.} and A. Nag and Walters, {A. C.} and M. Garc{\'i}a-Fern{\'a}ndez and Zhou, {Ke Jin} and J. Pelliciari and I. Jarrige and Freeland, {J. W.} and Junjie Zhang and Mitchell, {J. F.} and V. Bisogni and X. Liu and Norman, {M. R.} and Dean, {M. P.M.}",

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AU - Lin, J. Q.

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AU - Fabbris, G.

AU - Botana, A. S.

AU - Meyers, D.

AU - Miao, H.

AU - Shen, Y.

AU - Mazzone, D. G.

AU - Feng, J.

AU - Chiuzbǎian, S. G.

AU - Nag, A.

AU - Walters, A. C.

AU - García-Fernández, M.

AU - Zhou, Ke Jin

AU - Pelliciari, J.

AU - Jarrige, I.

AU - Freeland, J. W.

AU - Zhang, Junjie

AU - Mitchell, J. F.

AU - Bisogni, V.

AU - Liu, X.

AU - Norman, M. R.

AU - Dean, M. P.M.

PY - 2021/2/22

Y1 - 2021/2/22

N2 - The discovery of superconductivity in a d9-δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9-1/3 trilayer nickelates R4Ni3O8 (where R=La, Pr) and associated theoretical modeling. A magnon energy scale of ∼80 meV resulting from a nearest-neighbor magnetic exchange of J=69(4) meV is observed, proving that d9-δ nickelates can host a large superexchange. This value, along with that of the Ni-O hybridization estimated from our O K-edge data, implies that trilayer nickelates represent an intermediate case between the infinite-layer nickelates and the cuprates. Layered nickelates thus provide a route to testing the relevance of superexchange to nickelate superconductivity.

AB - The discovery of superconductivity in a d9-δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9-1/3 trilayer nickelates R4Ni3O8 (where R=La, Pr) and associated theoretical modeling. A magnon energy scale of ∼80 meV resulting from a nearest-neighbor magnetic exchange of J=69(4) meV is observed, proving that d9-δ nickelates can host a large superexchange. This value, along with that of the Ni-O hybridization estimated from our O K-edge data, implies that trilayer nickelates represent an intermediate case between the infinite-layer nickelates and the cuprates. Layered nickelates thus provide a route to testing the relevance of superexchange to nickelate superconductivity.

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Strong Superexchange in a d9-δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering

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