Glass transitions in monodisperse cluster-forming ensembles : vortex matter in type-1.5 superconductors

Diaz-Mendez, Rogelio ; Mezzacapo, Fabio ; Lechner, Wolfgang ; Cinti, Fabio ; Babaev, Egor ; Pupillo, Guido (2017)

CITATION: Diaz-Mendez, R., et al. 2017. Glass transitions in monodisperse cluster-forming ensembles : vortex matter in type-1.5 superconductors. Physical Review Letters, 118(6):1-5, doi:10.1103/PhysRevLett.118.067001.

The original publication is available at https://journals.aps.org/prl

Article

At low enough temperatures and high densities, the equilibrium configuration of an ensemble of ultrasoft particles is a self-assembled, ordered, cluster crystal. In the present Letter, we explore the out-of-equilibrium dynamics for a two-dimensional realization, which is relevant to superconducting materials with multiscale intervortex forces. We find that, for small temperatures following a quench, the suppression of the thermally activated particle hopping hinders the ordering. This results in a glass transition for a monodispersed ensemble, for which we derive a microscopic explanation in terms of an “effective polydispersity” induced by multiscale interactions. This demonstrates that a vortex glass can form in clean systems of thin films of “type-1.5” superconductors. An additional setup to study this physics can be layered superconducting systems, where the shape of the effective vortex-vortex interactions can be engineered.

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