6 papers
Transition in the supercritical state of matter: experimental evidence
Cillian Cockrell, Vadim V. Brazhkin, Kostya Trachenko
A large and mostly unexplored part of the phase diagram lies above the critical point. The supercritical matter was traditionally believed to be physically homogeneous with no disc…
Universal interrelation between dynamics and thermodynamics of fluids: dynamically-driven "c"-transition
Cillian Cockrell, Vadim V. Brazhkin, Kostya Trachenko
Our first very wide survey of the supercritical phase diagram and its key properties reveals a universal interrelation between dynamics and thermodynamics and an unambiguous transi…
Crossover of dynamical instability and chaos in the supercritical state
C. Cockrell
We calculate the maximal Lyapunov exponent for a bulk system of 256 Lennard-Jones particles in constant energy molecular dynamics simulations deep into the supercritical state. We…
Collective modes and gapped momentum states in liquid Ga: experiment, theory and simulation
Ramil M. Khusnutdinoff, Cillian Cockrell, Oliver A. Dicks +7
Collective excitations in liquids are important for understanding liquid dynamical and thermodynamic properties. Gapped momentum states (GMS) are a notable feature of liquid dynami…
Experimental and modelling evidence for structural crossover in supercritical CO
Cillian J. Cockrell, Oliver Dicks, Ling Wang +4
Physics of supercritical state is understood to a much lesser degree compared to subcritical liquids. Carbon dioxide in particular has been intensely studied, yet little is known a…
Pronounced structural crossover in supercritical water
Cillian Cockrell, Oliver Dicks, Vadim Brazhkin +1
There have been ample studies of the many phases of H2O in both its solid and low pressure liquid states, and the transitions between them. Using molecular dynamics simulations we…