Abstract Using Monte Carlo simulations, we have investigated the classical $XY$ model on triangular lattices of ultra-thin film structures with middle ferromagnetic layers sandwiched between two antiferromagnetic layers. The internal energy, the specific heat, the chirality and the chiral susceptibility are calculated in order to clarify phase transitions and critical phenomena. From the finite-size scaling analyses, the values of critical exponents are determined. In a range of interaction parameters, we find that the chirality steeply goes up as temperature increases in a temperature range; correspondingly the value of a critical exponent for this change is estimated.
Received: 17 October 2005
Revised: 27 February 2006
Accepted manuscript online:
(Magnetic properties of monolayers and thin films)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10234010).
Cite this article:
Wang Yi (王 漪), Liu Xiao-Yan (刘晓彦), Sun Lei (孙 雷), Zhang Xing (张 兴), Han Ru-Qi (韩汝琦) Critical properties of XY model on two-dimensional layered magnetic films 2006 Chinese Physics 15 1081
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
