title: Effective temperature in an interacting vertex system: theory and experiment on artificial spin ice.
abstract: Frustrated arrays of interacting single-domain nanomagnets provide important model systems for statistical mechanics, as they map closely onto well-studied vertex models and are amenable to direct imaging and custom engineering. Although these systems are manifestly athermal, we demonstrate that an effective temperature, controlled by an external magnetic drive, describes their microstates and therefore their full statistical properties.
authors.affiliation: Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Cristiano
authors.initials: C
authors.lastname: Nisoli
authors.forename: Jie
authors.initials: J
authors.lastname: Li
authors.forename: Xianglin
authors.initials: X
authors.lastname: Ke
authors.forename: D
authors.initials: D
authors.lastname: Garand
authors.forename: Peter
authors.initials: P
authors.lastname: Schiffer
authors.forename: Vincent H
authors.initials: VH
authors.lastname: Crespi