Contrasting Phenomenology of NMR Shifts in Cuprate Superconductors
AbstractNuclear magnetic resonance (NMR) shifts, if stripped of their uncertainties, must hold key information about the electronic fluid in the cuprates. The early shift interpretation that favored a single-fluid scenario will be reviewed, as well as recent experiments that reported its failure. Thereafter, based on literature shift data for planar Cu, a contrasting shift phenomenology for cuprate superconductors is developed, which is very different from the early view while being in agreement with all published data. For example, it will be shown that the hyperfine scenario used up to now is inadequate as a large isotropic shift component is discovered. Furthermore, the changes of the temperature dependences of the shifts above and below the superconducting transitions temperature proceed according to a few rules that were not discussed before. It appears that there can be substantial spin shift at the lowest temperature if the magnetic field is perpendicular to the CuO
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Haase, J.; Jurkutat, M.; Kohlrautz, J. Contrasting Phenomenology of NMR Shifts in Cuprate Superconductors. Condens. Matter 2017, 2, 16.
Haase J, Jurkutat M, Kohlrautz J. Contrasting Phenomenology of NMR Shifts in Cuprate Superconductors. Condensed Matter. 2017; 2(2):16.Chicago/Turabian Style
Haase, Jürgen; Jurkutat, Michael; Kohlrautz, Jonas. 2017. "Contrasting Phenomenology of NMR Shifts in Cuprate Superconductors." Condens. Matter 2, no. 2: 16.
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