We focus on inelastic neutron scattering in URu2Si2 and argue that observed gap in the fermion spectrum naturally leads to the spin feature observed at energies ωres=4−6meV at momenta at \bQ∗=(1±0.4,0,0). We discuss how spin features seen in URu2Si2 can indeed be thought of in terms of {\em spin resonance} that develops in HO state and is {\em not related} to superconducting transition at 1.5K. In our analysis we assume that the HO gap is due to a particle-hole condensate that connects nested parts of the Fermi surface with nesting vector Q∗. Within this approach we can predicted the behavior of the spin susceptibility at \bQ∗ and find it to be is strikingly similar to the phenomenology of resonance peaks in high-Tc and heavy fermion superconductors. The energy of the resonance peak scales with THOωres≃4kBTHO. We discuss observable consequences spin resonance will have on neutron scattering and local density of states.
@article{arxiv.0903.2570,
title = {Incommensurate spin resonance in URu2Si2},
author = {A. V. Balatsky and A. Chantis and Hari P. Dahal and David Parker and J. -X. Zhu},
journal= {arXiv preprint arXiv:0903.2570},
year = {2015}
}