Metallic ground state and glassy transport in single crystalline URh${}_2$Ge${}_2$: 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 URh${}_2$Ge${}_2$. 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.

5 pages, 4 figures, accepted for publication in PRL

References in corpus (11)

• Non-Fermi liquid behavior and Griffiths phase in {\it f}-electron compounds
• Interplay of disorder and spin fluctuations in the resistivity near a quantum critical point
• Disorder-driven non-Fermi liquid behavior in Kondo alloys
• Mean field theory of the Mott-Anderson transition
• Spin glass behavior in URh_2Ge_2
• Evidence for a common physical description of non-Fermi-liquid behavior in f-electron systems
• The Nature of Heavy Quasiparticles in Magnetically Ordered Heavy Fermions
• Disorder-to-order transition in the magnetic and electronic properties of URh_2Ge_2
• Towards a Classification of the Effects of Disorder on Materials Properties
• On the residual resistivity near a two dimensional metamagnetic quantum critical point
• Localization effects and inelastic scattering in disordered heavy electrons

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