Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió acceptadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/118933
Mixed-order phase transition in a colloidal crystal
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Mixed-order phase transitions display a discontinuity in the order parameter like first-order transitions yet feature critical behavior like second-order transitions. Such transitions have been predicted for a broad range of equilibrium and nonequilibrium systems, but their experimental observation has remained elusive. Here, we analytically predict and experimentally realize a mixed-order equilibrium phase transition. Specifically, a discontinuous solid-solid transition in a 2D crystal of paramagnetic colloidal particles is induced by a magnetic field HH. At the transition field HsHs, the energy landscape of the system becomes completely flat, which causes diverging fluctuations and correlation length ξ∝|H2−H2s|−1/2ξ∝|H2−Hs2|−1/2. Mean-field critical exponents are predicted, since the upper critical dimension of the transition is du=2du=2. Our colloidal system provides an experimental test bed to probe the unconventional properties of mixed-order phase transitions.
Matèries (anglès)
Citació
Citació
ALERT ZENÓN, Ricard, TIERNO, Pietro, CASADEMUNT I VIADER, Jaume. Mixed-order phase transition in a colloidal crystal. _Proceedings of the National Academy of Sciences of the United States of America - PNAS_. 2017. Vol. 114, núm. 49, pàgs. 12906-12909. [consulta: 8 de gener de 2026]. ISSN: 0027-8424. [Disponible a: https://hdl.handle.net/2445/118933]