Connection between charge-density-wave order and charge transport in the cuprate superconductors
arXiv:1404.7658 · doi:10.1038/ncomms6875
Abstract
Charge-density-wave (CDW) correlations within the quintessential CuO planes have been argued to either cause [1] or compete with [2] the superconductivity in the cuprates, and they might furthermore drive the Fermi-surface reconstruction in high magnetic fields implied by quantum oscillation (QO) experiments for YBaCuO (YBCO) [3] and HgBaCuO (Hg1201) [4]. Consequently, the observation of bulk CDW order in YBCO was a significant development [5,6,7]. Hg1201 features particularly high structural symmetry and recently has been demonstrated to exhibit Fermi-liquid charge transport in the relevant temperature-doping range of the phase diagram, whereas for YBCO and other cuprates this underlying property of the CuO planes is partially or fully masked [8-10]. It therefore is imperative to establish if the pristine transport behavior of Hg1201 is compatible with CDW order. Here we investigate Hg1201 ( = 72 K) via bulk Cu L-edge resonant X-ray scattering. We indeed observe CDW correlations in the absence of a magnetic field, although the correlations and competition with superconductivity are weaker than in YBCO. Interestingly, at the measured hole-doping level, both the short-range CDW and Fermi-liquid transport appear below the same temperature of about 200 K. Our result points to a unifying picture in which the CDW formation is preceded at the higher pseudogap temperature by = 0 magnetic order [11,12] and the build-up of significant dynamic antiferromagnetic correlations [13]. Furthermore, the smaller CDW modulation wave vector observed for Hg1201 is consistent with the larger electron pocket implied by both QO [4] and Hall-effect [14] measurements, which suggests that CDW correlations are indeed responsible for the low-temperature QO phenomenon.
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- Competition among various charge-inhomogeneous states and d-wave superconducting state in Hubbard models on square lattices
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- Evolution of charge order topology across a magnetic phase transition in cuprate superconductors
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- Superconductor to Mott insulator transition in YBaCuO/LaCaMnO heterostructures
- Spin and charge density waves in the quasi-one-dimensional KMn6Bi5
- X-rays writing/reading of Charge Density Waves in the CuO2 plane of a simple cuprate superconductor
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- Berry Phase in Cuprate Superconductors
- Gutzwiller Charge Phase Diagram of Cuprates, including Electron-Phonon Coupling Effects
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- Oxygen on-site Coulomb energy in PrLaCeCuO and BiSrCaCuO and its relation with Heisenberg exchange
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