3D Modulated Spin Liquid model applied to URu$_2$Si$_2$
  We have developed a 3D version for the Modulated Spin Liquid in a body-centered tetragonal lattice structure to describe the hidden order observed in URu$_2$Si$_2$ at $T_0\approx17.5$ K. This second order transition is well described by our model confirming our earlier hypothesis. The symmetry of the modulation is minimized for ${\bf Q}\equiv(1,1,1)$. We assume a linear variation of the interaction parameters with the lattice spacing and our results show good agreement with uniaxial and pressure experiments. 
Christopher Thomas, S\'ebastien Burdin, Catherine P\'epin, Alvaro   Ferraz
cond-mat.str-el