PIRSA:16040062

Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet

Castelnovo, C. (2016). Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet. Perimeter Institute. https://pirsa.org/16040062

Castelnovo, Claudio. Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet. Perimeter Institute, Apr. 12, 2016, https://pirsa.org/16040062 

          @misc{ pirsa_PIRSA:16040062,
            doi = {10.48660/16040062},
            url = {https://pirsa.org/16040062},
            author = {Castelnovo, Claudio},
            keywords = {Condensed Matter},
            language = {en},
            title = {Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet},
            publisher = {Perimeter Institute},
            year = {2016},
            month = {apr},
            note = {PIRSA:16040062 see, \url{https://pirsa.org}}
          }

Claudio Castelnovo

University of Cambridge

Talk number
PIRSA:16040062
Collection
Talk Type
Subject
Abstract

When a classical system is driven through a continuous phase transition, its nonequilibrium response is universal and exhibits Kibble-Zurek scaling. We explore this dynamical scaling in the context of a three-dimensional topological magnet with fractionalized excitations, namely, the liquid-gas transition of the emergent mobile magnetic monopoles in dipolar spin ice. Using field-mixing and finite-size scaling techniques, we place the critical point of the liquid-gas line in the three-dimensional Ising universality class. We then demonstrate Kibble-Zurek scaling for sweeps of the magnetic field through the critical point. Unusually slow microscopic time scales in spin ice offer a unique opportunity to detect this universal nonequilibrium physics within current experimental capability.