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NMR investigation of antiferromagnetism and coherence in URu2Si2-xPx

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Shirer,  K. R.
Physics of Microstructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Shirer, K. R., Lawson, M., Kissikov, T., Bush, B. T., Gallagher, A., Chen, K.-W., et al. (2017). NMR investigation of antiferromagnetism and coherence in URu2Si2-xPx. Physical Review B, 95(4): 041107, pp. 1-5. doi:10.1103/PhysRevB.95.041107.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-80ED-5
Abstract
We report P-31 and Si-29 NMR in single crystals of URu2Si2-x P-x for x = 0.09 and x = 0.33. The spectra in the x = 0.33 sample are consistent with a homogenous commensurate antiferromagnetic phase below T-N similar to 37 K. The Knight shift exhibits an anomaly at the coherence temperature T* that is slightly enhanced with P doping. Spin-lattice-relaxation rate data indicate that the density of states is suppressed for x = 0.09 below 30 K, similar to the undoped compound, but there is no evidence of long-range order at this concentration. Our results suggest that Si substitution provides chemical pressure and electronic tuning mediated by filling of the s/p shells with minimal electronic inhomogeneity.