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17 papers
Partial Equilibration Scenario in 3D athermal martensites quenched below first-order transition temperatures
N. Shankaraiah, K. P. N. Murthy, S. R. Shenoy
To test a Partial Equilibration Scenario (PES) of Ritort and colleagues, we do Monte Carlo simulations of discretized-strain spin models, for four 3D martensitic structural transit…
Understanding glass-like Vogel-Fulcher-Tammann equilibration times: microcanonical effective temperatures in quenched 3D martensites
N. Shankaraiah, K. P. N. Murthy, S. R. Shenoy
We do Monte Carlo simulations of four 3D structural transitions, with vector-spin models of their martensitic strain domains under quenches to , to test a generic post-quench Pa…
Dynamical scaling for underdamped strain order parameters quenched below first-order phase transitions
N. Shankaraiah, Awadhesh K. Dubey, Sanjay Puri +1
In the conceptual framework of phase ordering after temperature quenches below transition, we consider the underdamped Bales-Gooding-type 'momentum conserving' dynamics of a 2D mar…
Re-equilibration after quenches in athermal martensites:Conversion-delays for vapour to liquid domain-wall phases
N. Shankaraiah, K. P. N. Murthy, T. Lookman +1
Entropy barriers and ageing states appear in martensitic structural-transition models, slowly re-equilibrating after temperature quenches, under Monte Carlo dynamics. Concepts from…
Microstructure from ferroelastic transitions using strain pseudospin clock models in two and three dimensions: a local mean-field analysis
Romain Vasseur, Turab Lookman, Subodh R. Shenoy
We show how microstructure can arise in first-order ferroelastic structural transitions, in two and three spatial dimensions, through a local meanfield approximation of their pseud…
Scaled free energies, power-law potentials, strain pseudospins and quasi-universality for first-order structural transitions
S. R. Shenoy, T. Lookman, A. Saxena
We consider ferroelastic first-order phase transitions with order-parameter strains entering Landau free energies as invariant polynomials, that have structural-vari…