Evidence for a hidden-order pseudogap in URu$_2$Si$_2$
POSTER
Abstract
Through an analysis and modeling of data from various experimental techniques, we present evidence for the presence of a hidden order pseudogap in URu$_2$Si$_2$ in the temperature range between 25 K and 17.5 K. Considering fluctuations of the hidden order energy gap at the transition as the origin of the pseudogap, we evaluate the effects that gap fluctuations would produce on observables like tunneling conductance, neutron scattering, and nuclear resonance, and relate them to the experimental findings. We show that the transition into hidden order phase is likely second order and is preceded by the onset of non-coherent hidden order fluctuations.
*Work was carried out under the help and support of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396 and the Center for Integrated Nanotechnology.