%0 Book Section %1 statphys23_0588 %A Ngo, V.T. %A Diep, H.T. %B Abstract Book of the XXIII IUPAP International Conference on Statistical Physics %C Genova, Italy %D 2007 %E Pietronero, Luciano %E Loreto, Vittorio %E Zapperi, Stefano %K frustration function green magnetism montecarlo phase simulation statphys23 surface topic-2 transition %T Frustrated Thin Films: Phase Transition and Phase Diagram %U http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=588 %X We study the effects of frustration in an antiferromagnetic film of FCC lattice with Heisenberg spin model including an Ising-like anisotropy. Monte Carlo (MC) simulations have been used to study thermodynamic properties of the film. We show that the presence of the surface reduces the ground state (GS) degeneracy found in the bulk. The GS is shown to depend on the surface in-plane interaction $J_s$ with a critical value at which ordering of type I coexists with ordering of type II. Near this value a reentrant phase is found. Various physical quantities such as layer magnetizations and layer susceptibilities are shown and discussed. The nature of the phase transition is also studied by histogram technique. We have also used the Green's function (GF) method for the quantum counterpart model. The results at low-$T$ show interesting effects of quantum fluctuations. Results obtained by the GF method at high $T$ are compared to those of MC simulations. A good agreement is observed.

@incollection{statphys23_0588, abstract = {We study the effects of frustration in an antiferromagnetic film of FCC lattice with Heisenberg spin model including an Ising-like anisotropy. Monte Carlo (MC) simulations have been used to study thermodynamic properties of the film. We show that the presence of the surface reduces the ground state (GS) degeneracy found in the bulk. The GS is shown to depend on the surface in-plane interaction $J_s$ with a critical value at which ordering of type I coexists with ordering of type II. Near this value a reentrant phase is found. Various physical quantities such as layer magnetizations and layer susceptibilities are shown and discussed. The nature of the phase transition is also studied by histogram technique. We have also used the Green's function (GF) method for the quantum counterpart model. The results at low-$T$ show interesting effects of quantum fluctuations. Results obtained by the GF method at high $T$ are compared to those of MC simulations. A good agreement is observed.}, added-at = {2007-06-20T10:16:09.000+0200}, address = {Genova, Italy}, author = {Ngo, V.T. and Diep, H.T.}, biburl = {https://www.bibsonomy.org/bibtex/26c7de3f02dd85c13672f5bada24c0c39/statphys23}, booktitle = {Abstract Book of the XXIII IUPAP International Conference on Statistical Physics}, editor = {Pietronero, Luciano and Loreto, Vittorio and Zapperi, Stefano}, interhash = {281e49e21ab2f7c24f6238fd454cad70}, intrahash = {6c7de3f02dd85c13672f5bada24c0c39}, keywords = {frustration function green magnetism montecarlo phase simulation statphys23 surface topic-2 transition}, month = {9-13 July}, timestamp = {2007-06-20T10:16:24.000+0200}, title = {Frustrated Thin Films: Phase Transition and Phase Diagram}, url = {http://st23.statphys23.org/webservices/abstract/preview_pop.php?ID_PAPER=588}, year = 2007 }