TY - JOUR
T1 - Experimental Evidence for a Structural-Dynamical Transition in Trajectory Space
AU - Pinchaipat, Rattachai
AU - Campo, Matteo
AU - Turci, Francesco
AU - Hallett, James
AU - Speck, Thomas
AU - Royall, Cp
PY - 2017/7/14
Y1 - 2017/7/14
N2 - Among the key insights into the glass transition has been the identification of a non-equilibrium phase transition in trajectory space which reveals phase coexistence between the normal supercooled liquid (active phase) and a glassy state (inactive phase). Here we present evidence that such a transition occurs in experiment. In colloidal hard spheres we find a non-Gaussian distribution of trajectories leaning towards those rich in locally favoured structures (LFS), associated with the emergence of slow dynamics. This we interpret as evidence for an non-equilibrium transition to an inactive LFS-rich phase. Reweighting trajectories reveals a first-order phase transition in trajectory space between a normal liquid and a LFS-rich phase. We further find evidence of a purely dynamical transition in trajectory space.
AB - Among the key insights into the glass transition has been the identification of a non-equilibrium phase transition in trajectory space which reveals phase coexistence between the normal supercooled liquid (active phase) and a glassy state (inactive phase). Here we present evidence that such a transition occurs in experiment. In colloidal hard spheres we find a non-Gaussian distribution of trajectories leaning towards those rich in locally favoured structures (LFS), associated with the emergence of slow dynamics. This we interpret as evidence for an non-equilibrium transition to an inactive LFS-rich phase. Reweighting trajectories reveals a first-order phase transition in trajectory space between a normal liquid and a LFS-rich phase. We further find evidence of a purely dynamical transition in trajectory space.
UR - http://www.scopus.com/inward/record.url?scp=85025463845&partnerID=8YFLogxK
UR - https://arxiv.org/abs/1609.00327
U2 - 10.1103/PhysRevLett.119.028004
DO - 10.1103/PhysRevLett.119.028004
M3 - Article (Academic Journal)
C2 - 28753337
AN - SCOPUS:85025463845
SN - 0031-9007
VL - 119
JO - Physical Review Letters
JF - Physical Review Letters
IS - 2
M1 - 028004
ER -