Driven Disordered Periodic Media with an Underlying Structural Phase Transition

Abstract

We investigate the driven states of a two-dimensional crystal whose ground state can be tuned through a square-triangular transition. The depinning of such a system from a quenched random background potential occurs via a complex sequence of dynamical states, which include plastic flow states, hexatics, dynamically stabilized triangle and square phases and intermediate regimes of phase coexistence. These results are relevant to transport experiments in the mixed phase of several superconductors which exhibit such structural transitions as well as to driven colloidal systems whose interactions can be tuned via surface modifications.

Two-column, 4 pages, figures included

References in corpus (19)

• Nonequilibrium Dynamic Phase Diagram for Vortex Lattices
• Vortex-glass phases in type-II superconductors
• Moving glass theory of driven lattices with disorder
• Nonequilibrium Steady States of Driven Periodic Media
• Vortex Dynamics and Defects in Simulated Flux Flow
• Direct measurement of three-body interactions
• Colloidal Dynamics on Disordered Substrates
• Observation of a Triangular to Square Flux Lattice Phase Transition in YBCO
• Comment on "Moving Glass Phase of Driven Lattices"
• Vortex dynamics in two-dimensional systems at high driving forces
• Field-driven topological glass transition in a model flux line lattice
• Driven Dynamics of Periodic Elastic Media in Disorder
• Dynamic Melting and Decoupling of the Vortex Lattice in Layered Superconductors
• Two Modes of Solid State Nucleation - Ferrites, Martensites and Isothermal Transformation Curves
• Dynamic transition in driven vortices across the peak effect in superconductors
• Square vortex lattice at anomalously low magnetic fields in electron-doped Nd${}_{1.85}$Ce${}_{0.15}$CuO${}_4$
• An elastic lattice in a random potential
• Probing Disordered Substrates by Imaging the Adsorbate in its Fluid Phase
• A model solid-state structural transformation: Tetragonal to Orthorhombic

Cited by in corpus (8)

• Depinning and nonequilibrium dynamic phases of particle assemblies driven over random and ordered substrates: a review
• Reversible to Irreversible Flow Transition in Periodically Driven Vortices
• Dynamic Regimes for Driven Colloidal Particles on a Periodic Substrate at Commensurate and Incommensurate Fillings
• Driven Disordered Polymorphic Solids: Phases and Phase Transitions, Dynamical Coexistence and Peak Effect Anomalies
• Stripe, gossamer, and glassy phases in systems with strong non-pairwise interactions
• Langevin Dynamics simulations of a 2-dimensional colloidal crystal under confinement and shear
• Filamentary flow of vortices with infinite tilt modulus in Bi_2Sr_2Ca_1Cu_2O_{8+δ} single crystal
• Structural Transitions in A Crystalline Bilayer : The Case of Lennard Jones and Gaussian Core Models