  Motivated by a recent development in the field theory of the fractional
quantum Hall effect, we propose a supersymmetric field theoretical model of
quantum critical d-wave and (d+id)-wave superconductors. New concept is a
composite particle with the supercharge which is formed by electron (hole) and
supersymmetric collective configurations of spin and charge. Quantum critical
d-wave superconductor is characterized as the condensate of these composite
particles.
