2011/03/17 by Sunao Shimizu, Shiho Iwai, Shin-ichiro Tabata +6 · 3 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.83.144523
published as Phys. Rev. B 83, 144523 (2011) [6 pages] · 7 pages, 5 figures, 2 Tables, to be published in Physical Review B
arxiv created 2011/03/17 · openalex publication_date 2011/04/25 · arxiv updated 2011/06/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report that planar CuO2 hole densities in high-Tc cuprates are consistently determined by the Cu NMR Knight shift. In single- and bilayered cuprates, it is demonstrated that the spin part of the Knight shift Ks(300 K) at room temperature monotonically increases with the hole density p from the underdoped to overdoped regions, suggesting that the relationship of Ks(300 K) vs p is a reliable measure to determine p. The validity of this Ks(300 K)-p relationship is confirmed by the investigation of the p dependencies of hyperfine magnetic fields and of spin susceptibility for single- and bilayered cuprates with tetragonal symmetry. Moreover, the analyses are compared with NMR data on three-layered Ba2Ca2Cu3O6(F,O)2 and HgBa2Ca2Cu3O_8+\ensuremathδ and five-layered HgBa2Ca4Cu5O_12+\ensuremathδ, which suggests the general applicability of the Ks(300 K)-p relationship to multilayered compounds with more than three CuO2 planes. The measurement of Ks(300 K) enables us to separately estimate p for each CuO2 plane in multilayered compounds, where doped hole carriers are inequivalent between outer CuO2 planes and inner CuO2 planes.