| Issue |
Europhys. Lett.
Volume 49, Number 5, March I 2000
|
|
|---|---|---|
| Page(s) | 644 - 650 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00199-0 | |
| Published online | 01 September 2002 | |
Dynamic critical behaviors of three-dimensional XY models related to superconductors/superfluids
Department of Theoretical Physics, Umeå University -
901 87 Umeå, Sweden
Received:
8
October
1999
Accepted:
9
December
1999
The dynamic critical exponent z is determined from
numerical simulations
for the
three-dimensional XY model subject to two types of dynamics,
i.e.,
relaxational dynamics and resistively shunted junction (RSJ) dynamics,
as well as for two different treatments of the boundary,
i.e., periodic boundary
condition (PBC) and fluctuating twist boundary condition (FTBC).
In case of relaxational dynamics, finite-size scaling at the critical
temperature gives 
for PBC and 1.5 for
FTBC, while for RSJ dynamics 
is obtained in both
cases. The results are discussed in the context of
superfluid/superconductors and
vortex dynamics, and are compared with what has been found
for other related models.
PACS: 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 05.70.Jk – Critical point phenomena / 75.40.Gb – Dynamic properties (dynamic susceptibility, spin waves, spin diffusion, dynamic scaling, etc.)
© EDP Sciences, 2000
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