Hidden Order Transition in URu2Si2 and the Emergence of a Coherent Kondo Lattice

TL;DR

This paper uses a large-N theoretical approach to explain recent experimental observations in URu2Si2, showing that a coherent Kondo lattice forms below the hidden order transition due to increased quasiparticle lifetime, possibly linked to an unknown order parameter.

Contribution

It provides a theoretical explanation for the emergence of a coherent Kondo lattice in URu2Si2 below the hidden order transition, aligning with recent experimental data.

Findings

Coherent Kondo lattice forms below HOT

Increase in quasiparticle lifetime drives lattice formation

Possible link to an unknown order parameter

Abstract

Using a large-N approach, we demonstrate that the differential conductance and quasi-particle interference pattern measured in recent scanning tunneling spectroscopy experiments (A.R. Schmidt et al. Nature 465, 570 (2010); P. Aynajian et al., PNAS 107, 10383 (2010)) in URu2Si2 are consistent with the emergence of a coherent Kondo lattice below its hidden order transition (HOT). Its formation is driven by a significant increase in the quasi-particle lifetime, which could arise from the emergence of a yet unknown order parameter at the HOT.