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Strange-metal behavior observed in the praseodymium-based heavy-fermionmaterial PrV2Al20 has been tentatively interpreted in the framework ofproximity to a quantum critical point (QCP) associated with quadrupolarordering. Here, we demonstrate that an alternative, natural explanation existswithout invoking a QCP, in terms of the unconventional nature of thequadrupolar Kondo effect taking place in non-Kramers ions. Using a combinationof ab initio density-functional theory calculations and analytical arguments,we construct a periodic Anderson model with realistic parameters to describePrV2Al20. We solve the model using dynamical mean-field theory preserving themodel symmetries and demonstrate the non-Fermi liquid strange-metal behaviorstemming from the two-channel nature of the quadrupolar Kondo effect. Ourcalculations provide an explanation for the puzzling temperature dependence inthe magnetic susceptibility, and provide a basis for analyzing futurephotoemission experiments.

Strange-metal behavior without fine-tuning in PrV2Al20