Evidence of second-order transition and critical scaling for the dynamical ordering transition in current-driven vortices.

ABSTRACT: Dynamical ordering from a disordered plastic flow to an anisotropically ordered smectic flow induced by a dc force has been studied in various many-particle systems, including vortices in type-II superconductors. However, it remains unclear whether the dynamical ordering is a true phase transition because of lack of suitable experimental methods. Here, we study the response of vortex flow to the transverse force using a cross-shaped amorphous Mo[Formula: see text]Ge[Formula: see text] film. From transverse current-voltage (force-velocity) characteristics under various longitudinal currents, we find a change of the transverse response in low voltage (velocity) regions from a nonlinear to linear behavior at a well-defined longitudinal current that marks the dynamical ordering transition. We

SUBMITTER: Maegochi S 

PROVIDER: S-EPMC10786941 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature