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- Title
Pseudogap and (An)isotropic Scattering in the Fluctuating Charge-Density Wave Phase of Cuprates.
- Authors
Caprara, S.; Grilli, M.; Castro, C.; Seibold, G.
- Abstract
We present a general scenario for high-temperature superconducting cuprates, based on the presence of dynamical charge density waves (CDWs) and to the occurrence of a CDW quantum critical point, which occurs, e.g., at doping p ≈ 0.16 in YBaCuO (YBCO). In this framework, the pseudogap temperature T is interpreted in terms of a reduction of the density of states due to incipient CDW and, at lower temperature to the possible formation of incoherent superconducting pairs. The dynamically fluctuating character of CDW accounts for the different temperatures at which the CDW onset revealed by X-ray scattering ( T ( p)), and the static three-dimensional CDW ordering appear. We also investigate the anisotropic character of the CDW-mediated scattering. We find that this is strongly anisotropic only close to the CDW quantum critical point (QCP) at low temperature and very low energy. It rapidly becomes nearly isotropic and marginal-Fermi-liquid-like away from the CDW QCP and at finite (even rather small) energies. This may reconcile the interpretation of Hall measurements in terms of anisotropic CDW scattering (arXiv:) with recent photoemission experiments Bok, J.M., et al. Sci. Adv. 2, e1501329 (2016).
- Subjects
SCATTERING (Physics); CHARGE density waves; SUPERCONDUCTIVITY; CUPRATES; FERMI liquids
- Publication
Journal of Superconductivity & Novel Magnetism, 2017, Vol 30, Issue 1, p25
- ISSN
1557-1939
- Publication type
Article
- DOI
10.1007/s10948-016-3775-9