Year: 2009
Type: article
Abstract: We investigate the behavior of a mesoscopic one-dimensional ring in an external magnetic field by simulating the time-dependent Ginzburg-Landau equations with periodic boundary conditions. We analyze the stability and the different possible evolutions for the phase slip phenomena starting from a metastable state. We find a stability condition relating the winding number of the initial solution and the number of flux quanta penetrating the ring. The analysis of multiple phase slips solutions is based on analytical results and simulations. The role of the ratio of two characteristic times $u$ is studied for the case of a multiple phase slips transition. We found out that if $u⪢1$, consecutive multiple phase slips will be more favorable than simultaneous ones. If $u⪡1$ the opposite is true and we confirm that $u⪢1$ is often a necessary condition to reach the ground state. The influence of the Langevin noise on the kinetics of the phase transition is discussed.
Source: Physical Review B
Authors: Mathieu Lu-Dac, V. V. Kabanov
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2069309391