| Issue |
Europhys. Lett.
Volume 55, Number 3, August 2001
|
|
|---|---|---|
| Page(s) | 317 - 323 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2001-00417-3 | |
| Published online | 01 December 2003 | |
Effect of order parameter fluctuations on the Halperin-Lubensky-Ma first-order transition in superconductors and liquid crystals
1
Department of Physics, Simon Fraser University
Burnaby, British Columbia, Canada V5A 1S6
2
Physics Department, University of Utrecht,
and FOM Institute for Atomic and Molecular
Physics - The Netherlands
Received:
28
November
2000
Accepted:
18
May
2001
We show that order parameter fluctuations in a good type-I superconductor or a liquid crystal always increase the size of the first-order transition. This behavior is eventually changed when the system crosses over to an inverted-XY critical behavior, with the size of the first-order transition vanishing as a power law with a crossover exponent. We find good agreement between our theory and a recent experiment on the nematic-smectic-A first-order transition in 8CB-10CB mixtures of liquid crystals.
PACS: 05.70.Fh – Phase transitions: general studies / 05.70.Jk – Critical point phenomena / 64.70.Md – Transitions in liquid crystals
© EDP Sciences, 2001
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