29Si NMR study of antiferromagnetic superconductor URu2Si2
作者： Yoh Kohori , Kazuyuki Matsuda , Takao Kohara
DOI: 10.1143/JPSJ.65.1083
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摘要: We present 29 Si NMR spectra, nuclear spin-lattice relaxation time, T 1 , and spin echo decay 2 measurements in URu over the temperature range from 0.15 K to 300 K. 1/ obtained with c -axis perpendicular external field H ext 1⊥ is much larger than that parallel 1// . Existence of large anisotropy together nearly isotropic hyperfine imply fluctuations exist predominantly direction tetragonal -axis. The temperature, dependence 1⊥,// -independent above 60 proportional at low temperatures, which indicates crossover localized state high temperatures Fermi liquid below about occurs electronic 5f electrons. decrease markedly N =17.5 associated antiferromagnetic order. Below C has no coherence peak decreases proportionally 3 l...
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