# Topological Kinetic Crossover in a Nanomagnet Array

Source: [Topological Kinetic Crossover in a Nanomagnet Array](<https://www.sota2.com/research/paper/68fa44571e209131ce91068c>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-25T04:44:56.489Z

Authors: Xiaoyu Zhang, Grant Fitez, Shayaan Subzwari, Nicholas S. Bingham, Ioan-Augustin Chioar, Hilal Saglam, Justin Ramberger, Chris Leighton, Cristiano Nisoli, Peter Schiffer

Published: 2023-05-19T19:45:44.000Z

## Abstract

Ergodic kinetics, which are critical to equilibrium thermodynamics, can be constrained by a system's topology. We study a model nanomagnetic array in which such constraints visibly affect the behavior. In this system, magnetic excitations connect into thermally active one-dimensional strings whose motion can be imaged in real time. At high temperatures, we observe the merging, breaking, and reconnecting of strings, resulting in the system transitioning between topologically distinct configurations. Below a crossover temperature, the string motion is dominated by simple changes in length and shape. In this low temperature regime, the system is energetically stable because of its inability to explore all possible topological configurations. This kinetic crossover suggests a generalizable conception of topologically broken ergodicity and limited equilibration.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2305.11973>)

[PDF](<https://arxiv.org/pdf/2305.11973.pdf>)