Journal
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
Volume 481, Issue -, Pages 161-167Publisher
ELSEVIER
DOI: 10.1016/j.physc.2012.04.040
Keywords
Cuprate superconductors; Quantum critical point; Stripe order; Nematic order; Iron-based superconductors; Organic superconductors
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Funding
- NSERC
- FQRNT
- CFI
- Canada Research Chair
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A spin density-wave quantum critical point (QCP) is the central organizing principle of organic, iron-pnictide, heavy-fermion and electron-doped cuprate superconductors. It accounts for the superconducting T-c dome, the non-Fermi-liquid resistivity, and the Fermi-surface reconstruction. Outside the magnetically ordered phase above the QCP, scattering and pairing decrease in parallel as the system moves away from the QCP. Here we argue that a similar scenario, based on a stripe-order QCP, is a central organizing principle of hole-doped cuprate superconductors. Key properties of La1.8-xEu0.2SrxCuO4, La1.6-xNd0.4SrxCuO4 and YBa2Cu3Oy are naturally unified, including stripe order itself, its QCP, Fermi-surface reconstruction, the linear-T resistivity, and the nematic character of the pseudogap phase. (C) 2012 Elsevier B. V. All rights reserved.
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