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  Prokes, K.; Huang, Y.-K.; Reehuis, M.; Klemke, B.; Hoffmann, J.-U.; Sokolowski, A.; de Visser, A.; Mydosh, J. A.: Electronic properties of a heavy-fermion U(Ru_0.92Rh_0.08)₂Si₂ single crystal. Physical Review B 95 (2017), p. 035138/1-10

10.1103/PhysRevB.95.035138
Open Access Version

Abstract:
U(Ru0.92Rh0.08)2Si2, prepared using a modified Czochralski method. Our study, that also includes neutron diffraction results, shows all the heavy-fermion signatures of pristine URu2Si2; however, the superconductivity, hidden order, and remnant weak antiferromagnetic orders are absent. Instead, the ground state of the doped system can be classified as a spin liquid that preserves the heavy-fermion character. U(Ru0.92Rh0.08)2Si2 exhibits a short-range magnetic order distinguished by reflections of a Lorentzian profile at qIII = (1/2 1/2 1/2) positions that disappear above ~ 15 K. The short-range order seems to be a precursor of a long-range magnetic order that occurs with higher Rh concentration. We indicate that these short-range fluctuations involve, at least partially, inelastic scattering processes.