Abstract
We report the experimental details of how mechanical detwinning can be implemented in tandem with high-sensitivity nuclear magnetic resonance measurements and use this setup to measure the in-plane anisotropy of the spin-lattice relaxation rate in underdoped with . The anisotropy reaches a maximum of 30% at , and the recovery data reveal that the glassy behavior of the spin fluctuations present in the twinned state persist in the fully detwinned crystal. A theoretical model is presented to describe the spin-lattice relaxation rate in terms of anisotropic nematic spin fluctuations.
- Received 12 August 2016
- Revised 21 September 2016
DOI:https://doi.org/10.1103/PhysRevB.94.165123
©2016 American Physical Society