We report spatially resolved nuclear-magnetic-resonance measurements on a high-temperature superconductor that indicate the presence of correlated antiferromagnetic fluctuations in the vortex core. The nuclear-spin-lattice relaxation rate 1/17T1 of planar 17O, in near-optimally doped YB2Cu3O7−δ, was measured. Outside of the core, (17T1T)−1 is independent of temperature consistent with theoretical predictions for a d-wave superconductor. In the vortex core, (17T1T)−1 increases with decreasing temperature following an antiferromagnetic Curie-Weiss law.
|Original language||English (US)|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jun 17 2003|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics