It is argued that the composite fermion liquid is a promising candidate for an observation of the elusive, interaction-driven magnetization first proposed by Bloch seven decades ago. In analogy to what is theoretically believed to be the case for the idealized electron gas in zero magnetic field, this spontaneously broken symmetry phase is predicted to occur prior to a transition into the Wigner crystal.

• Received 8 September 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.5543