Abstract
29Si nuclear magnetic resonance (NMR) has been studied in a 29Si–enriched single crystal sample of URu2Si2. The spin-echo decay for applied field H || [110] and [001] directions has been measured at 50 K. A clear spin-echo decay oscillation is observed for both cases, reflecting the Ruderman-Kittel interaction between Si nuclei. Since the observed oscillation frequency depends on the direction of applied magnetic field, the Ruderman-Kittel and anisotropic pseudo-dipolar interactions may not be negligible in this compound. The origin of spin-echo decay oscillations is discussed.
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