Strange-metal behavior without fine tuning in PrV 2 Al 20
Year: 2024
Type: article
Abstract: Strange-metal behavior observed in the praseodymium-based heavy-fermion material PrV 2 Al 20 has been tentatively interpreted in the framework of proximity to a quantum critical point (QCP) associated with quadrupolar ordering. Here, we demonstrate that an alternative, natural explanation exists without invoking a QCP, in terms of the unconventional nature of the quadrupolar Kondo effect taking place in non-Kramers ions. Using a combination of density-functional theory calculations and analytical arguments, we construct a periodic Anderson model with realistic parameters to describe PrV 2 Al 20 . We solve the model using dynamical mean-field theory preserving the model symmetries and demonstrate the non-Fermi liquid strange-metal behavior stemming from the two-channel nature of the quadrupolar Kondo effect. Our calculations provide an explanation for the puzzling temperature dependence in the magnetic susceptibility and provide a basis for analyzing future photoemission experiments. Published by the American Physical Society 2024
Source: Physical Review Research
Institutions: University of Bonn, Rice University, University of St Andrews
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,625
Awards: G2229954460, G2432923657, G2638999096, TRR 185: OSCAR Kontrolle atomarer und photonischer Quantenmaterie durch maßgeschneiderte Kopplung an Reservoire, Multipolar Orders and Interplay with Hybridization in non-Kramers Kondo Lattice Materials, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, EXC 2004: Materie und Licht für Quanteninformation (ML4Q), G819863883
OpenAlex ID: W4403224060