Effective Temperature in an Interacting Vertex System:<? format?> Theory and Experiment on Artificial Spin Ice
Physical review letters, 2010•APS
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.
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.
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.
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