Direct observation of orbital hybridisation in a cuprate superconductor

C. E. Matt; D. Sutter; A. M. Cook; Y. Sassa; M. Månsson; O. Tjernberg; L. Das; M. Horio; D. Destraz; C. G. Fatuzzo; K. Hauser; M. Shi; M. Kobayashi; V. N. Strocov; T. Schmitt; P. Dudin; M. Hoesch; S. Pyon; T. Takayama; H. Takagi; O. J. Lipscombe; S. M. Hayden; T. Kurosawa; N. Momono; M. Oda; T. Neupert; J. Chang

doi:10.1038/s41467-018-03266-0

Direct observation of orbital hybridisation in a cuprate superconductor

C. E. Matt^*, D. Sutter, A. M. Cook, Y. Sassa, M. Månsson, O. Tjernberg, L. Das, M. Horio, D. Destraz, C. G. Fatuzzo, K. Hauser, M. Shi, M. Kobayashi, V. N. Strocov, T. Schmitt, P. Dudin, M. Hoesch, S. Pyon, T. Takayama, H. TakagiO. J. Lipscombe, S. M. Hayden, T. Kurosawa, N. Momono, M. Oda, T. Neupert, J. Chang

^*Corresponding author for this work

School of Physics

Research output: Contribution to journal › Article (Academic Journal) › peer-review

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Abstract

The minimal ingredients to explain the essential physics of layered copper-oxide (cuprates) materials remains heavily debated. Effective low-energy single-band models of the copper–oxygen orbitals are widely used because there exists no strong experimental evidence supporting multi-band structures. Here, we report angle-resolved photoelectron spectroscopy experiments on La-based cuprates that provide direct observation of a two-band structure. This electronic structure, qualitatively consistent with density functional theory, is parametrised by a two-orbital ( and ) tight-binding model. We quantify the orbital hybridisation which provides an explanation for the Fermi surface topology and the proximity of the van-Hove singularity to the Fermi level. Our analysis leads to a unification of electronic hopping parameters for single-layer cuprates and we conclude that hybridisation, restraining d-wave pairing, is an important optimisation element for superconductivity.

Original language	English
Article number	972
Number of pages	7
Journal	Nature Communications
Volume	9
DOIs	https://doi.org/10.1038/s41467-018-03266-0
Publication status	Published - 6 Mar 2018

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Superconductivity and Competing Orders in High Tc Cuprates
Carrington, A.
1/12/17 → 7/01/22
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Matt, C. E., Sutter, D., Cook, A. M., Sassa, Y., Månsson, M., Tjernberg, O., Das, L., Horio, M., Destraz, D., Fatuzzo, C. G., Hauser, K., Shi, M., Kobayashi, M., Strocov, V. N., Schmitt, T., Dudin, P., Hoesch, M., Pyon, S., Takayama, T., ... Chang, J. (2018). Direct observation of orbital hybridisation in a cuprate superconductor. Nature Communications, 9, [972]. https://doi.org/10.1038/s41467-018-03266-0

Matt, C. E. ; Sutter, D. ; Cook, A. M. ; Sassa, Y. ; Månsson, M. ; Tjernberg, O. ; Das, L. ; Horio, M. ; Destraz, D. ; Fatuzzo, C. G. ; Hauser, K. ; Shi, M. ; Kobayashi, M. ; Strocov, V. N. ; Schmitt, T. ; Dudin, P. ; Hoesch, M. ; Pyon, S. ; Takayama, T. ; Takagi, H. ; Lipscombe, O. J. ; Hayden, S. M. ; Kurosawa, T. ; Momono, N. ; Oda, M. ; Neupert, T. ; Chang, J. / Direct observation of orbital hybridisation in a cuprate superconductor. In: Nature Communications. 2018 ; Vol. 9.

@article{29215334e2b54173964c4b7e3d1780a1,

title = "Direct observation of orbital hybridisation in a cuprate superconductor",

abstract = "The minimal ingredients to explain the essential physics of layered copper-oxide (cuprates) materials remains heavily debated. Effective low-energy single-band models of the copper–oxygen orbitals are widely used because there exists no strong experimental evidence supporting multi-band structures. Here, we report angle-resolved photoelectron spectroscopy experiments on La-based cuprates that provide direct observation of a two-band structure. This electronic structure, qualitatively consistent with density functional theory, is parametrised by a two-orbital ( and ) tight-binding model. We quantify the orbital hybridisation which provides an explanation for the Fermi surface topology and the proximity of the van-Hove singularity to the Fermi level. Our analysis leads to a unification of electronic hopping parameters for single-layer cuprates and we conclude that hybridisation, restraining d-wave pairing, is an important optimisation element for superconductivity.",

author = "Matt, {C. E.} and D. Sutter and Cook, {A. M.} and Y. Sassa and M. M{\aa}nsson and O. Tjernberg and L. Das and M. Horio and D. Destraz and Fatuzzo, {C. G.} and K. Hauser and M. Shi and M. Kobayashi and Strocov, {V. N.} and T. Schmitt and P. Dudin and M. Hoesch and S. Pyon and T. Takayama and H. Takagi and Lipscombe, {O. J.} and Hayden, {S. M.} and T. Kurosawa and N. Momono and M. Oda and T. Neupert and J. Chang",

year = "2018",

month = mar,

day = "6",

doi = "10.1038/s41467-018-03266-0",

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Matt, CE, Sutter, D, Cook, AM, Sassa, Y, Månsson, M, Tjernberg, O, Das, L, Horio, M, Destraz, D, Fatuzzo, CG, Hauser, K, Shi, M, Kobayashi, M, Strocov, VN, Schmitt, T, Dudin, P, Hoesch, M, Pyon, S, Takayama, T, Takagi, H, Lipscombe, OJ, Hayden, SM, Kurosawa, T, Momono, N, Oda, M, Neupert, T & Chang, J 2018, 'Direct observation of orbital hybridisation in a cuprate superconductor', Nature Communications, vol. 9, 972. https://doi.org/10.1038/s41467-018-03266-0

Direct observation of orbital hybridisation in a cuprate superconductor. / Matt, C. E.; Sutter, D.; Cook, A. M.; Sassa, Y.; Månsson, M.; Tjernberg, O.; Das, L.; Horio, M.; Destraz, D.; Fatuzzo, C. G.; Hauser, K.; Shi, M.; Kobayashi, M.; Strocov, V. N.; Schmitt, T.; Dudin, P.; Hoesch, M.; Pyon, S.; Takayama, T.; Takagi, H.; Lipscombe, O. J.; Hayden, S. M.; Kurosawa, T.; Momono, N.; Oda, M.; Neupert, T.; Chang, J.

In: Nature Communications, Vol. 9, 972, 06.03.2018.

Research output: Contribution to journal › Article (Academic Journal) › peer-review

TY - JOUR

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AU - Matt, C. E.

AU - Sutter, D.

AU - Cook, A. M.

AU - Sassa, Y.

AU - Månsson, M.

AU - Tjernberg, O.

AU - Das, L.

AU - Horio, M.

AU - Destraz, D.

AU - Fatuzzo, C. G.

AU - Hauser, K.

AU - Shi, M.

AU - Kobayashi, M.

AU - Strocov, V. N.

AU - Schmitt, T.

AU - Dudin, P.

AU - Hoesch, M.

AU - Pyon, S.

AU - Takayama, T.

AU - Takagi, H.

AU - Lipscombe, O. J.

AU - Hayden, S. M.

AU - Kurosawa, T.

AU - Momono, N.

AU - Oda, M.

AU - Neupert, T.

AU - Chang, J.

PY - 2018/3/6

Y1 - 2018/3/6

N2 - The minimal ingredients to explain the essential physics of layered copper-oxide (cuprates) materials remains heavily debated. Effective low-energy single-band models of the copper–oxygen orbitals are widely used because there exists no strong experimental evidence supporting multi-band structures. Here, we report angle-resolved photoelectron spectroscopy experiments on La-based cuprates that provide direct observation of a two-band structure. This electronic structure, qualitatively consistent with density functional theory, is parametrised by a two-orbital ( and ) tight-binding model. We quantify the orbital hybridisation which provides an explanation for the Fermi surface topology and the proximity of the van-Hove singularity to the Fermi level. Our analysis leads to a unification of electronic hopping parameters for single-layer cuprates and we conclude that hybridisation, restraining d-wave pairing, is an important optimisation element for superconductivity.

AB - The minimal ingredients to explain the essential physics of layered copper-oxide (cuprates) materials remains heavily debated. Effective low-energy single-band models of the copper–oxygen orbitals are widely used because there exists no strong experimental evidence supporting multi-band structures. Here, we report angle-resolved photoelectron spectroscopy experiments on La-based cuprates that provide direct observation of a two-band structure. This electronic structure, qualitatively consistent with density functional theory, is parametrised by a two-orbital ( and ) tight-binding model. We quantify the orbital hybridisation which provides an explanation for the Fermi surface topology and the proximity of the van-Hove singularity to the Fermi level. Our analysis leads to a unification of electronic hopping parameters for single-layer cuprates and we conclude that hybridisation, restraining d-wave pairing, is an important optimisation element for superconductivity.

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DO - 10.1038/s41467-018-03266-0

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VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 972

ER -

Direct observation of orbital hybridisation in a cuprate superconductor

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Superconductivity and Competing Orders in High Tc Cuprates

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