Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2012-03-27
Physics
Condensed Matter
Strongly Correlated Electrons
6 pages, 5 figures
Scientific paper
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 along both the a- and c-axes of the tetragonal structure. The optical conductivity allows the formation of the hidden order gap to be investigated in detail. We find that both the conductivity and the gap structure are anisotropic, and that the c-axis conductivity shows evidence for a double gap structure, with $\Delta_{1,c}=2.7$ meV and $\Delta_{2,c}=1.8$ meV respectively at 4 K, while the gap seen in the a-axis conductivity has a value of $\Delta_a=3.2$ meV at 4 K. The opening of the gaps does not follow the behaviour expected from mean field theory in the vicinity of the transition.
Hall Jesse S.
Luke Graeme
Nagel Urmas
Room Toomas
Timusk Thomas
No associations
LandOfFree
Observation of Multiple-Gap Structure in Hidden Order State of URu2Si2 from Optical Conductivity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Observation of Multiple-Gap Structure in Hidden Order State of URu2Si2 from Optical Conductivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of Multiple-Gap Structure in Hidden Order State of URu2Si2 from Optical Conductivity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-638750