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Spatially inhomogeneous competition between superconductivity and the charge density wave in YBa2Cu3O6.67
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- Choi, J. (author)
- University of Zurich
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- Ivashko, O. (author)
- University of Zurich,German Electron Synchrotron (DESY)
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- Blackburn, E. (author)
- 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
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- (creator_code:org_t)
- 2020-02-20
- 2020
- English.
- In: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 11:1
- Journal article (peer-reviewed)
Abstract
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- 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- Choi, J.
- Ivashko, O.
- Blackburn, E.
- Liang, R.
- Bonn, D. A.
- Hardy, W. N.
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- Holmes, A. T.
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- Hücker, M.
- Gerber, S.
- Gutowski, O.
- Rütt, U.
- Zimmermann, M. v ...
- Forgan, E. M.
- Hayden, S. M.
- Chang, J.
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