2017/10/31 by W. A. Atkinson, S. Ufkes, Steven Ufkes +1 · 9 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Character (mathematics) #Charge (physics) #Charge density #Charge density wave #Condensed matter physics #Cuprate #Curvature #Fermi surface #Geometry #Line (geometry) #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Quadrupole #Quantum mechanics #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.97.125147
published in Physical review. B./Physical review. B 97(12) (American Physical Society)
arxiv created 2018/03/26 · openalex publication_date 2018/03/26 · arxiv updated 2018/03/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Using a mix of numerical and analytic methods, we show that recent NMR 17O measurements provide detailed information about the structure of the charge-density wave (CDW) phase in underdoped YBa2Cu3O6+x. We perform Bogoliubov-de Gennes (BdG) calculations of both the local density of states and the orbitally resolved charge density, which are closely related to the magnetic and electric quadrupole contributions to the NMR spectrum, using a microscopic model that was shown previously to agree closely with x-ray experiments. The BdG results reproduce qualitative features of the experimental spectrum extremely well. These results are interpreted in terms of a generic ``hot-spot'' model that allows one to trace the origins of the NMR line shapes. We find that four quantities---the orbital character of the Fermi surface at the hot spots, the Fermi surface curvature at the hot spots, the CDW correlation length, and the magnitude of the subdominant CDW component---are key in determining the line shapes.