We performed far-infrared optical spectroscopy measurements on the heavy fermion
compound URu 2 Si 2 as a function of temperature. The light's electric field was applied …

We have measured the far-infrared reflectance of the heavy-fermion compound URu 2 Si 2
through the phase transition at T HO= 17.5 K dubbed “hidden order” with light polarized …

We present the in-plane optical reflectance measurement on single crystals of URu 2 Si 2.
The study revealed a strong temperature-dependent spectral evolution. Above 50 K, the low …

We summarize existing optical data of URu2Si2 to clarify the nature of the hidden order
transition in this heavy fermion metal. Hybridization develops between 50 K and 17.5 K, and …

We present a detailed temperature and frequency dependence of the optical conductivity
measured on clean high-quality single crystals of URu 2 Si 2 of ac-and ab-plane surfaces …

We present data on the optical conductivity of URu 2− x (Fe, Os) x Si 2. While the parent
material URu 2 Si 2 enters the enigmatic hidden order (HO) phase below 17.5 K, an …

A dramatic increase in the total thermal conductivity (κ) is observed in the hidden order (HO)
state of single crystal URu 2 Si 2. Through measurements of the thermal Hall conductivity …

Measurements of the far-infrared reflectance of URu 2 Si 2 between 10 and 720 cm− 1 have
been made at temperatures from 2 to 90 K. Above the coherence temperature the optical …

We report a comprehensive investigation of the lattice dynamics of URu 2 Si 2 as a function
of temperature using Raman scattering, optical conductivity, and inelastic neutron scattering …

We present a study of thermal conductivity in the normal state of the heavy-fermion
superconductor URu 2 Si 2. Ordering at 18 K leads to a steep increase in thermal …