Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates

Abstract The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not explicitly consider the orbital degrees of freedom of...

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Autores principales:	Peizhi Mai, Giovanni Balduzzi, Steven Johnston, Thomas A. Maier
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
Acceso en línea:	https://doaj.org/article/e64d69e2561e4c78ae4034e6aa59ffa6
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spelling	oai:doaj.org-article:e64d69e2561e4c78ae4034e6aa59ffa62021-12-02T17:04:53ZOrbital structure of the effective pairing interaction in the high-temperature superconducting cuprates10.1038/s41535-021-00326-52397-4648https://doaj.org/article/e64d69e2561e4c78ae4034e6aa59ffa62021-03-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00326-5https://doaj.org/toc/2397-4648Abstract The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not explicitly consider the orbital degrees of freedom of the relevant CuO2 planes. Here, we use a dynamical cluster quantum Monte Carlo approximation to study the orbital structure of the pairing interaction in the three-band Hubbard model, which treats the orbital degrees of freedom explicitly. We find that the interaction predominately acts between neighboring copper orbitals, but with significant additional weight appearing on the surrounding bonding molecular oxygen orbitals. By explicitly comparing these results to those from the simpler single-band Hubbard model, our study provides strong support for the single-band framework for describing superconductivity in the cuprates.Peizhi MaiGiovanni BalduzziSteven JohnstonThomas A. MaierNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-5 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Peizhi Mai Giovanni Balduzzi Steven Johnston Thomas A. Maier Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
description	Abstract The nature of the effective interaction responsible for pairing in the high-temperature superconducting cuprates remains unsettled. This question has been studied extensively using the simplified single-band Hubbard model, which does not explicitly consider the orbital degrees of freedom of the relevant CuO2 planes. Here, we use a dynamical cluster quantum Monte Carlo approximation to study the orbital structure of the pairing interaction in the three-band Hubbard model, which treats the orbital degrees of freedom explicitly. We find that the interaction predominately acts between neighboring copper orbitals, but with significant additional weight appearing on the surrounding bonding molecular oxygen orbitals. By explicitly comparing these results to those from the simpler single-band Hubbard model, our study provides strong support for the single-band framework for describing superconductivity in the cuprates.
format	article
author	Peizhi Mai Giovanni Balduzzi Steven Johnston Thomas A. Maier
author_facet	Peizhi Mai Giovanni Balduzzi Steven Johnston Thomas A. Maier
author_sort	Peizhi Mai
title	Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
title_short	Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
title_full	Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
title_fullStr	Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
title_full_unstemmed	Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
title_sort	orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e64d69e2561e4c78ae4034e6aa59ffa6
work_keys_str_mv	AT peizhimai orbitalstructureoftheeffectivepairinginteractioninthehightemperaturesuperconductingcuprates AT giovannibalduzzi orbitalstructureoftheeffectivepairinginteractioninthehightemperaturesuperconductingcuprates AT stevenjohnston orbitalstructureoftheeffectivepairinginteractioninthehightemperaturesuperconductingcuprates AT thomasamaier orbitalstructureoftheeffectivepairinginteractioninthehightemperaturesuperconductingcuprates
_version_	1718381822832803840

Orbital structure of the effective pairing interaction in the high-temperature superconducting cuprates

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