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X-Ray Diffraction Observations of a Charge-Density-Wave Order in Superconducting Ortho-II YBa_{2}Cu_{3}O_{6.54} Single Crystals in Zero Magnetic Field

Blackburn, E. and Chang, J. and Hücker, M. and Holmes, A. T. and Christensen, N. B. and Liang, Ruixing and Bonn, D. A. and Hardy, W. N. and Rütt, U. and Gutowski, O. and Zimmermann, M. v. and Forgan, E. M. and Hayden, S. M. (2013) X-Ray Diffraction Observations of a Charge-Density-Wave Order in Superconducting Ortho-II YBa_{2}Cu_{3}O_{6.54} Single Crystals in Zero Magnetic Field. Physical Review Letters, 110 (13). ISSN 0031-9007

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URL of Published Version: http://dx.doi.org/10.1103/PhysRevLett.110.137004

Identification Number/DOI: doi:10.1103/PhysRevLett.110.137004

X-ray diffraction measurements show that the high-temperature superconductor YBa2Cu3O6.54, with ortho-II oxygen order, has charge-density-wave order in the absence of an applied magnetic field. The dominant wave vector of the charge density wave is q_CDW =(0, 0.328(2), 0.5), with the in-plane component parallel to the b axis (chain direction). It has a similar incommensurability to that observed in ortho-VIII and ortho-III samples, which have different dopings and oxygen orderings. Our results for ortho-II contrast with recent high-field NMR measurements, which suggest a commensurate wave vector along the a axis. We discuss the relationship between spin and charge correlations in YBa2Cu3Oy and recent high-field quantum oscillation, NMR, and ultrasound experiments.

Type of Work:Article
Date:29 March 2013 (Publication)
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:School of Physics and Astronomy
Subjects:QC Physics
Institution:University of Birmingham
Copyright Holders:American Physical Society
ID Code:1378
Refereed:YES
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