Spatially inhomogeneous competition between superconductivity and the charge density wave in YBa2Cu3O6.67

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.

Ivashko, O.University of Zurich,German Electron Synchrotron (DESY) (författare)
Blackburn, E.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,University of Birmingham(Swepub:lu)el3543bl (författare)
Liang, R.University of British Columbia,Canadian Institute for Advanced Research (CIFAR) (författare)
Bonn, D. A.University of British Columbia,Canadian Institute for Advanced Research (CIFAR) (författare)
Hardy, W. N.University of British Columbia,Canadian Institute for Advanced Research (CIFAR) (författare)
Holmes, A. T.European Spallation Source ESS AB (författare)
Christensen, N. B.Technical University of Denmark (författare)
Hücker, M.Weizmann Institute of Science Israel (författare)
Gerber, S.Paul Scherrer Institute (författare)
Gutowski, O.German Electron Synchrotron (DESY) (författare)
Rütt, U.German Electron Synchrotron (DESY) (författare)
Zimmermann, M. v.German Electron Synchrotron (DESY) (författare)
Forgan, E. M.University of Birmingham (författare)
Hayden, S. M.University of Bristol (författare)
Chang, J.University of Zurich (författare)
University of ZurichGerman Electron Synchrotron (DESY) (creator_code:org_t)

Ingår i:Nature Communications: Springer Science and Business Media LLC11:12041-1723

Av författaren/redakt...: Choi, J.; Ivashko, O.; Blackburn, E.; Liang, R.; Bonn, D. A.; Hardy, W. N.; visa fler...; Holmes, A. T.; Christensen, N. ...; Hücker, M.; Gerber, S.; Gutowski, O.; Rütt, U.; Zimmermann, M. v ...; Forgan, E. M.; Hayden, S. M.; Chang, J.; visa färre...

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