Spontaneous Magnetization of Composite Fermions

TL;DR

This paper suggests that composite fermion liquids could exhibit spontaneous magnetization, serving as an observable interaction-driven magnetic phase that occurs before a transition to a Wigner crystal, analogous to behaviors in ideal electron gases.

Contribution

It proposes the composite fermion liquid as a candidate for observing interaction-driven spontaneous magnetization, extending the understanding of magnetic phases in quantum systems.

Findings

Composite fermion liquids can exhibit spontaneous magnetization.

This phase occurs prior to Wigner crystal formation.

The behavior is analogous to ideal electron gases in zero magnetic field.

Abstract

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.