Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate

Quantum phase transitions play an important role in shaping the phase diagram of high-temperature cuprate superconductors. These cuprates possess intertwined orders which interact strongly with superconductivity. However, the evidence for the quantum critical point associated with the charge order i...

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Autores principales:	H. Y. Huang, A. Singh, C. Y. Mou, S. Johnston, A. F. Kemper, J. van den Brink, P. J. Chen, T. K. Lee, J. Okamoto, Y. Y. Chu, J. H. Li, S. Komiya, A. C. Komarek, A. Fujimori, C. T. Chen, D. J. Huang
Formato:	article
Lenguaje:	EN
Publicado:	American Physical Society 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/5ed1f6ccd943482cb47ed9bbdeb43f4c
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spelling	oai:doaj.org-article:5ed1f6ccd943482cb47ed9bbdeb43f4c2021-11-23T15:50:43ZQuantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate10.1103/PhysRevX.11.0410382160-3308https://doaj.org/article/5ed1f6ccd943482cb47ed9bbdeb43f4c2021-11-01T00:00:00Zhttp://doi.org/10.1103/PhysRevX.11.041038http://doi.org/10.1103/PhysRevX.11.041038https://doaj.org/toc/2160-3308Quantum phase transitions play an important role in shaping the phase diagram of high-temperature cuprate superconductors. These cuprates possess intertwined orders which interact strongly with superconductivity. However, the evidence for the quantum critical point associated with the charge order in the superconducting phase remains elusive. Here, we reveal the short-range charge orders and the spectral signature of the quantum fluctuations in La_{2-x}Sr_{x}CuO_{4} (LSCO) near the optimal doping using high-resolution resonant inelastic x-ray scattering. On performing calculations through a diagrammatic framework, we discover that the charge correlations significantly soften several branches of phonons. These results elucidate the role of charge order in the LSCO compound, providing evidence for quantum critical scaling and discommensurations associated with charge order.H. Y. HuangA. SinghC. Y. MouS. JohnstonA. F. KemperJ. van den BrinkP. J. ChenT. K. LeeJ. OkamotoY. Y. ChuJ. H. LiS. KomiyaA. C. KomarekA. FujimoriC. T. ChenD. J. HuangAmerican Physical SocietyarticlePhysicsQC1-999ENPhysical Review X, Vol 11, Iss 4, p 041038 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 H. Y. Huang A. Singh C. Y. Mou S. Johnston A. F. Kemper J. van den Brink P. J. Chen T. K. Lee J. Okamoto Y. Y. Chu J. H. Li S. Komiya A. C. Komarek A. Fujimori C. T. Chen D. J. Huang Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
description	Quantum phase transitions play an important role in shaping the phase diagram of high-temperature cuprate superconductors. These cuprates possess intertwined orders which interact strongly with superconductivity. However, the evidence for the quantum critical point associated with the charge order in the superconducting phase remains elusive. Here, we reveal the short-range charge orders and the spectral signature of the quantum fluctuations in La_{2-x}Sr_{x}CuO_{4} (LSCO) near the optimal doping using high-resolution resonant inelastic x-ray scattering. On performing calculations through a diagrammatic framework, we discover that the charge correlations significantly soften several branches of phonons. These results elucidate the role of charge order in the LSCO compound, providing evidence for quantum critical scaling and discommensurations associated with charge order.
format	article
author	H. Y. Huang A. Singh C. Y. Mou S. Johnston A. F. Kemper J. van den Brink P. J. Chen T. K. Lee J. Okamoto Y. Y. Chu J. H. Li S. Komiya A. C. Komarek A. Fujimori C. T. Chen D. J. Huang
author_facet	H. Y. Huang A. Singh C. Y. Mou S. Johnston A. F. Kemper J. van den Brink P. J. Chen T. K. Lee J. Okamoto Y. Y. Chu J. H. Li S. Komiya A. C. Komarek A. Fujimori C. T. Chen D. J. Huang
author_sort	H. Y. Huang
title	Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
title_short	Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
title_full	Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
title_fullStr	Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
title_full_unstemmed	Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate
title_sort	quantum fluctuations of charge order induce phonon softening in a superconducting cuprate
publisher	American Physical Society
publishDate	2021
url	https://doaj.org/article/5ed1f6ccd943482cb47ed9bbdeb43f4c
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Quantum Fluctuations of Charge Order Induce Phonon Softening in a Superconducting Cuprate

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