Metallic ground state and glassy transport in single crystalline URh2Ge2: Enhancement of disorder effects in a strongly correlated electron system
Abstract
We present a detailed study of the electronic transport properties on a single crystalline specimen of the moderately disordered heavy fermion system URh2Ge2. For this material, we find glassy electronic transport in a single crystalline compound. We derive the temperature dependence of the electrical conductivity and establish metallicity by means of optical conductivity and Hall effect measurements. The overall behavior of the electronic transport properties closely resembles that of metallic glasses, with at low temperatures an additional minor spin disorder contribution. We argue that this glassy electronic behavior in a crystalline compound reflects the enhancement of disorder effects as consequence of strong electronic correlations.
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