Electronic Resource
Springer
The European physical journal
5 (1998), S. 735-743
ISSN:
1434-6036
Keywords:
PACS. 05.70.Fh Phase transitions: general aspects - 64.60.Cn Order disorder transformations; statistical mechanics of model systems - 75.10.-b General theory and models of magnetic ordering
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The nature of the phase transition for the XY stacked triangular antiferromagnet (STA) is a controversial subject at present. The field theoretical renormalization group (RG) in three dimensions predicts a first order transition. This prediction disagrees with Monte-Carlo (MC) simulations which favor a new universality class or a tricritical transition. We simulate by the Monte-Carlo method two models derived from the STA by imposing the constraint of local rigidity which should have the same critical behavior as the original model. A strong first order transition is found. Following Zumbach we analyze the second order transition observed in MC studies as due to a fixed point in the complex plane. We review the experimental results in order to clarify the critical behavior observed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050497
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