2014/06/30 by Andrea Allais, Debanjan Chowdhury, Subir Sachdev · 5 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Brillouin zone #Charge (physics) #Charge density wave #Chemistry #Condensed matter physics #Cuprate #Electron #Fermi surface #Field (mathematics) #Magnetic and transport properties of perovskites and related materials #Magnetic field #Oscillation (cell signaling) #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum #Quantum mechanics #Quantum oscillations #Semiclassical physics #Spin (aerodynamics) #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1038/ncomms6771
published as Nature Communications 5, 5771 (2014) · Main article: 12 pages, 10 figures. Supplementary material: 3 pages, 4 figures; (v3) contains an expanded discussion and additional references
arxiv created 2014/11/03 · openalex publication_date 2014/12/10 · arxiv updated 2014/12/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The central puzzle of the cuprate superconductors at low hole density is the nature of the pseudogap regime. It has a number of seemingly distinct experimental signatures: a suppression of the paramagnetic spin susceptibility at high temperatures, low energy electronic excitations that extend over arcs in the Brillouin zone, X-ray detection of charge density wave order at intermediate temperatures, and quantum oscillations at high magnetic fields and low temperatures. We show that a model of competing charge density wave and superconducting orders provides a unified description of the intermediate and low temperature regimes. We treat quantum oscillations at high field beyond semiclassical approximations, and find clear and robust signatures of an electron pocket compatible with existing observations; we also predict oscillations due to additional hole pockets. In the zero field and intermediate temperature regime, we compute the electronic spectrum in the presence of thermally fluctuating charge density and superconducting orders. Our results are compatible with experimental trends.