Critical dynamics of superconductors in the charged regime.
We investigate the finite temperature critical dynamics of three-dimensional superconductors in the charged regime, described by a transverse gauge field coupling to the superconducting order parameter. Assuming relaxational dynamics for both the order parameter and the gauge fields, within a dynamical renormalization group scheme, we find a new dynamic universality class characterized by a finite fixed point ratio between the transport coefficients associated with the order parameter and gauge fields, respectively. We find signatures of this universality class in various measurable physical quantities, and in the existence of a universal amplitude ratio formed by a combination of physical quantities.
Lannert
Courtney
C
Department of Physics, Wellesley College, 106 Central Street, Wellesley, Massachusetts 02481-8203, USA.
Vishveshwara
Smitha
S
Fisher
Matthew P A
MP