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Restoring the strange metal phase via suppression of charge density waves in an underdoped cuprate superconductor

Wahlberg, Eric; Arpaia, Riccardo; Seibold, Goetz; Rossi, Matteo; Fumagalli, Roberto; Trabaldo, Edoardo; Brookes, Nicholas; Braicovich, Lucio; Caprara, Sergio; Gran, Ulf; Ghiringhelli, Giacomo; Bauch, Thilo; Lombardi, Floriana

[This repository contains the raw data for the manuscript "Restoring the strange metal phase via suppression of charge density waves in an underdoped cuprate superconductor" (arXiv:2009.08398)]

The normal state of cuprates is dominated by the “strange metal” phase that, near optimal doping, shows a linear temperature dependence of the resistivity persisting down to the lowest T, when superconductivity is suppressed. For underdoped cuprates this behavior is lost below the pseudogap temperature T*, where Charge Density Waves (CDW) together with other intertwined local orders characterize the ground state. Here we show that the T-linear resistivity of highly strained, ultrathin and underdoped YBa2Cu3O7-δ films is restored when the CDW amplitude, detected by Resonant Inelastic X-ray scattering, is suppressed. This observation points towards an intimate connection between the onset of CDW and the departure from T-linear resistivity in underdoped cuprates, a link that was missing until now.  It also illustrates the potentiality of strain control to manipulate the ground state of quantum materials.

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Figure1A - Lattice parameters vs thickness.xlsx
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Figure2A - rho(T) vs lattice parameters t 50 nm.xlsx
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Figure2B - rho(T) vs lattice parameters t 10 nm p 0.12.xlsx
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Figure2C - rho(T) vs lattice parameters t 10 nm p 0.147.xlsx
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Figure2D - Fermi surface t 50 nm.xlsx
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Figure2E - Fermi surface t 10 nm.xlsx
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Figure3A - rho_a(T) vs doping.xlsx
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Figure3B - rho_b(T) vs doping.xlsx
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Figure3C - rho(T) vs phi.xlsx
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Figure3D - T_L vs phi and doping.xlsx
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Figure4A - Hscan 50 nm a-axis.xlsx
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Figure4B - Hscan 50 nm b-axis.xlsx
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Figure4C - Hscan 10 nm a-axis.xlsx
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Figure4D - Hscan 10 nm b-axis.xlsx
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Figure5 - T_L and T_CDW vs doping.xlsx
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FigureS1A - Bragg 006 vs thickness.xlsx
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FigureS1B - XRD map (038)-(308) YBCO 50 nm along MgO 1-10.xlsx
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FigureS1C - XRD map (038)-(308) YBCO 50 nm along MgO 001.xlsx
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FigureS1D - XRD map (038)-(308) YBCO 20 nm along MgO 1-10.xlsx
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FigureS1E - XRD map (038)-(308) YBCO 20 nm along MgO 001.xlsx
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FigureS1F - XRD map (038)-(308) YBCO 10 nm along MgO 1-10.xlsx
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FigureS1G - XRD map (038)-(308) YBCO 10 nm along MgO 001.xlsx
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FigureS2 - b-axis resistivity 10 nm vs 50 nm at p 0.19.xlsx
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FigureS3A - a- and b-axis resistivity 50 nm on STO.xlsx
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FigureS3B - a- and b-axis resistivity 10 nm on STO.xlsx
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FigureS4A - Angular dependence T_L.xlsx
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FigureS4B - a- and b-axis resistivity 10 nm unpatterned.xlsx
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FigureS5A - Kscan 50 nm a-axis.xlsx
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FigureS5B - Kscan 10 nm a-axis.xlsx
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FigureS5C - Kscan 50 nm b-axis.xlsx
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FigureS5D - Kscan 10 nm b-axis.xlsx
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FigureS6 - CDW vs t at p 0.13.xlsx
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FigureS7A - Hscan 50 nm a-axis STO.xlsx
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FigureS7B - Hscan 50 nm b-axis STO.xlsx
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FigureS7C - Kscan 50 nm a-axis STO.xlsx
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FigureS7D - Kscan 50 nm b-axis STO.xlsx
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FigureS7E - Hscan 10 nm a-axis STO.xlsx
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FigureS7F - Hscan 10 nm b-axis STO.xlsx
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FigureS7G - Kscan 10 nm a-axis STO.xlsx
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FigureS7H - Kscan 10 nm b-axis STO.xlsx
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FigureS7I- CDW area norm to b-axis on MgO.xlsx
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FigureS7J- CDW area norm to b-axis on STO.xlsx
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FigureS8 - CO Average area vs T.xlsx
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FigureS9C - CDW scattering rate vs phi.xlsx
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FigureS9D - Fermi velocity and kernel vs in-plane direction.xlsx
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FigureS9E - Resistivity vs in-plane direction.xlsx
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