  We study theoretically the paramagnetic state in d-wave superconductors. We
present the specific heat, the magnetization, superfluid density obtained
within the weak-coupling model. At low temperatures and for small magnetic
fields they exhibit simple power law behaviors, which should be accessible
experimentally in hole-doped high-T_c cuprates and \kappa-(ET)_2 salts in a
magnetic field within the conducting plane.
