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Restored strange metal phase through suppression of charge density waves in underdoped YBa2Cu3O7–δ

  • The normal state of optimally doped cuprates is dominated by the “strange metal” phase that shows a linear temperature (T) dependence of the resistivity persisting down to the lowest T. For underdoped cuprates, this behavior is lost below the pseudogap temperature T*, where charge density waves (CDWs), together with other intertwined local orders, characterize the ground state. We found that the T-linear resistivity of highly strained, ultrathin, underdoped YBa2Cu3O7–δ films is restored when the CDW amplitude, detected by resonant inelastic x-ray scattering, is suppressed. This observation suggests an intimate connection between the onset of CDWs and the departure from T-linear resistivity in underdoped cuprates. Our results illustrate the potential of using strain control to manipulate the ground state of quantum materials.

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Author: Eric Wahlberg, Riccardo Arpaia, Götz SeiboldORCiD, Matteo Rossi, Roberto Fumagalli, Edoardo Trabaldo, Nicholas B. Brookes, Lucio Braicovich, Sergio CapraraORCiD, Floriana Lombardi, Ulf Gran, Giacomo Claudio Ghiringhelli, Thilo Bauch
URL:https://www.science.org/doi/10.1126/science.abc8372
DOI:https://doi.org/10.1126/science.abc8372
Title of the source (English):Science
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2021
Tag:Charge-Density Wave; Cuprate superconductors
Volume/Year:373
Issue number:6562
First Page:1506
Last Page:1510
Faculty/Chair:Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Computational Physics
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