Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ

A. Chainani, M. Sicot, Y. Fagot-Revurat, G. Vasseur, J. Granet, B. Kierren, L. Moreau, M. Oura, Ayako Yamamoto, Y. Tokura, D. Malterre

Research output: Contribution to journalArticle

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Abstract

We study the electronic structure of HgBa2Ca2Cu3O8+δ (Hg1223; Tc=134 K) using photoemission spectroscopy (PES) and x-ray absorption spectroscopy (XAS). Resonant valence band PES across the O K edge and Cu L edge identifies correlation satellites originating in O 2p and Cu 3d two-hole final states, respectively. Analyses using the experimental O 2p and Cu 3d partial density of states show quantitatively different on-site Coulomb energy for the Cu site (Udd=6.5±0.5 eV) and O site (Upp=1.0±0.5 eV). Cu2O7-cluster calculations with nonlocal screening explain the Cu 2p core level PES and Cu L-edge XAS spectra, confirm the Udd and Upp values, and provide evidence for the Zhang-Rice singlet state in Hg1223. In contrast to other hole-doped cuprates and 3d-transition metal oxides, the present results indicate weakly correlated oxygen holes in Hg1223.

Original languageEnglish
Article number057001
JournalPhysical Review Letters
Volume119
Issue number5
DOIs
Publication statusPublished - 2017 Jul 31
Externally publishedYes

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cuprates
photoelectric emission
x ray absorption
x ray spectroscopy
absorption spectroscopy
oxygen
spectroscopy
rice
metal oxides
screening
transition metals
electronic structure
valence
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Chainani, A., Sicot, M., Fagot-Revurat, Y., Vasseur, G., Granet, J., Kierren, B., ... Malterre, D. (2017). Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ. Physical Review Letters, 119(5), [057001]. https://doi.org/10.1103/PhysRevLett.119.057001

Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ. / Chainani, A.; Sicot, M.; Fagot-Revurat, Y.; Vasseur, G.; Granet, J.; Kierren, B.; Moreau, L.; Oura, M.; Yamamoto, Ayako; Tokura, Y.; Malterre, D.

In: Physical Review Letters, Vol. 119, No. 5, 057001, 31.07.2017.

Research output: Contribution to journalArticle

Chainani, A, Sicot, M, Fagot-Revurat, Y, Vasseur, G, Granet, J, Kierren, B, Moreau, L, Oura, M, Yamamoto, A, Tokura, Y & Malterre, D 2017, 'Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ', Physical Review Letters, vol. 119, no. 5, 057001. https://doi.org/10.1103/PhysRevLett.119.057001
Chainani, A. ; Sicot, M. ; Fagot-Revurat, Y. ; Vasseur, G. ; Granet, J. ; Kierren, B. ; Moreau, L. ; Oura, M. ; Yamamoto, Ayako ; Tokura, Y. ; Malterre, D. / Evidence for Weakly Correlated Oxygen Holes in the Highest- Tc Cuprate Superconductor HgBa2Ca2Cu3 O8+δ. In: Physical Review Letters. 2017 ; Vol. 119, No. 5.
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AU - Moreau, L.

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