Abstract:
:The charge density wave in the high-temperature superconductor YBa2Cu3O7-x (YBCO) has two different ordering tendencies differentiated by their c-axis correlations. These correspond to ferro- (F-CDW) and antiferro- (AF-CDW) couplings between CDWs in neighbouring CuO2 bilayers. This discovery has prompted several fundamental questions: how does superconductivity adjust to two competing orders and are either of these orders responsible for the electronic reconstruction? Here we use x-ray diffraction to study YBa2Cu3O6.67 as a function of magnetic field and temperature. We show that regions with F-CDW correlations suppress superconductivity more strongly than those with AF-CDW correlations. This implies that an inhomogeneous superconducting state exists, in which some regions show a fragile form of superconductivity. By comparison of F-CDW and AF-CDW correlation lengths, it is concluded that F-CDW ordering is sufficiently long-range to modify the electronic structure. Our study thus suggests that F-CDW correlations impact both the superconducting and normal state properties of YBCO.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Choi J,Ivashko O,Blackburn E,Liang R,Bonn DA,Hardy WN,Holmes AT,Christensen NB,Hücker M,Gerber S,Gutowski O,Rütt U,Zimmermann MV,Forgan EM,Hayden SM,Chang Jdoi
10.1038/s41467-020-14536-1subject
Has Abstractpub_date
2020-02-20 00:00:00pages
990issue
1issn
2041-1723pii
10.1038/s41467-020-14536-1journal_volume
11pub_type
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