Formation of Incommensurate Charge Density Waves in Cuprates

H. Miao; R. Fumagalli; M. Rossi; J. Lorenzana; G. Seibold; F. Yakhou-Harris; K. Kummer; N. B. Brookes; G. D. Gu; L. Braicovich; G. Ghiringhelli; M. P.M. Dean

doi:10.1103/PhysRevX.9.031042

Formation of Incommensurate Charge Density Waves in Cuprates

H. Miao, R. Fumagalli, M. Rossi, J. Lorenzana, G. Seibold, F. Yakhou-Harris, K. Kummer, N. B. Brookes, G. D. Gu, L. Braicovich, G. Ghiringhelli, M. P.M. Dean

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

Although charge density waves (CDWs) are omnipresent in cuprate high-temperature superconductors, they occur at significantly different wave vectors, confounding efforts to understand their formation mechanism. Here, we use resonant inelastic X-ray scattering to investigate the doping-and temperature-dependent CDW evolution in La2-xBaxCuO4 (x=0.115-0.155). We discover that the CDW develops in two stages with decreasing temperature. A precursor CDW with a quasicommensurate wave vector emerges first at high temperature. This doping-independent precursor CDW correlation originates from the CDW phase mode coupled with a phonon and "seeds" the low-temperature CDW with a strongly doping-dependent wave vector. Our observation reveals the precursor CDW and its phase mode as the building blocks of the highly intertwined electronic ground state in the cuprates.

Original language	English
Article number	031042
Journal	Physical Review X
Volume	9
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevX.9.031042
State	Published - Sep 6 2019
Externally published	Yes

Funding

H. M. and M. P. M. D. acknowledge V. Bisogni, J. Tranquada, and I. Robinson for insightful discussions. This material is based upon work supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program under Grant No. 1047478. Work at Brookhaven National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-SC00112704. RIXS measurements were performed at the ID32 beam line of the European Synchrotron Radiation Facility (ESRF). J. L. acknowledges financial support from Italian MAECI through Projects No. SUPERTOP-PGR04879 and No. AR17MO7, from MIUR though Project No. PRIN 2017Z8TS5B, and from Regione Lazio (L. R. 13/08) under project SIMAP.

Funders	Funder number
Italian MAECI	AR17MO7, SUPERTOP-PGR04879
MIUR though	PRIN 2017Z8TS5B
Office of Basic Energy Sciences	1047478
U.S. Department of Energy
Office of Science	DE-SC00112704
Brookhaven National Laboratory
European Synchrotron Radiation Facility
Regione Lazio

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title = "Formation of Incommensurate Charge Density Waves in Cuprates",

abstract = "Although charge density waves (CDWs) are omnipresent in cuprate high-temperature superconductors, they occur at significantly different wave vectors, confounding efforts to understand their formation mechanism. Here, we use resonant inelastic X-ray scattering to investigate the doping-and temperature-dependent CDW evolution in La2-xBaxCuO4 (x=0.115-0.155). We discover that the CDW develops in two stages with decreasing temperature. A precursor CDW with a quasicommensurate wave vector emerges first at high temperature. This doping-independent precursor CDW correlation originates from the CDW phase mode coupled with a phonon and {"}seeds{"} the low-temperature CDW with a strongly doping-dependent wave vector. Our observation reveals the precursor CDW and its phase mode as the building blocks of the highly intertwined electronic ground state in the cuprates.",

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AU - Miao, H.

AU - Fumagalli, R.

AU - Rossi, M.

AU - Lorenzana, J.

AU - Seibold, G.

AU - Yakhou-Harris, F.

AU - Kummer, K.

AU - Brookes, N. B.

AU - Gu, G. D.

AU - Braicovich, L.

AU - Ghiringhelli, G.

AU - Dean, M. P.M.

PY - 2019/9/6

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N2 - Although charge density waves (CDWs) are omnipresent in cuprate high-temperature superconductors, they occur at significantly different wave vectors, confounding efforts to understand their formation mechanism. Here, we use resonant inelastic X-ray scattering to investigate the doping-and temperature-dependent CDW evolution in La2-xBaxCuO4 (x=0.115-0.155). We discover that the CDW develops in two stages with decreasing temperature. A precursor CDW with a quasicommensurate wave vector emerges first at high temperature. This doping-independent precursor CDW correlation originates from the CDW phase mode coupled with a phonon and "seeds" the low-temperature CDW with a strongly doping-dependent wave vector. Our observation reveals the precursor CDW and its phase mode as the building blocks of the highly intertwined electronic ground state in the cuprates.

AB - Although charge density waves (CDWs) are omnipresent in cuprate high-temperature superconductors, they occur at significantly different wave vectors, confounding efforts to understand their formation mechanism. Here, we use resonant inelastic X-ray scattering to investigate the doping-and temperature-dependent CDW evolution in La2-xBaxCuO4 (x=0.115-0.155). We discover that the CDW develops in two stages with decreasing temperature. A precursor CDW with a quasicommensurate wave vector emerges first at high temperature. This doping-independent precursor CDW correlation originates from the CDW phase mode coupled with a phonon and "seeds" the low-temperature CDW with a strongly doping-dependent wave vector. Our observation reveals the precursor CDW and its phase mode as the building blocks of the highly intertwined electronic ground state in the cuprates.

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Formation of Incommensurate Charge Density Waves in Cuprates

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