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Title: Landscape-Inversion Phase Transition in Dipolar Colloids: Tuning the Structure and Dynamics of 2D Crystals
Author: Alert Zenón, Ricard
Casademunt i Viader, Jaume
Tierno, Pietro
Keywords: Física de partícules
Particle physics
Issue Date: 4-Nov-2014
Publisher: American Physical Society
Abstract: We study the 2D crystalline phases of paramagnetic colloidal particles with dipolar interactions and constrained on a periodic substrate. Combining theory, simulation, and experiments, we demonstrate a new scenario of first-order phase transitions that occurs via a complete inversion of the energy landscape, featuring nonconventional properties that allow for (i) tuning of crystal symmetry, (ii) control of dynamical properties of different crystalline orders via tuning of their relative stability with an external magnetic field, (iii) an equivalent but independent control of the same dynamic properties via temporal modulations of that field, and (iv) nonstandard phase-ordering kinetics involving spontaneous formation of transient metastable domains.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2014, vol. 113, num. 19, p. 19831
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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