INVESTIGADORES
RAMIREZ PASTOR Antonio Jose
artículos
Título:
Critical behavior of repulsive linear k-mers on triangular lattices
Autor/es:
P. M. PASINETTI; F. ROMÁ; J. L. RICCARDO; A. J. RAMIREZ-PASTOR
Revista:
PHYSICAL REVIEW B - SOLID STATE
Referencias:
Año: 2006 vol. 74 p. 155418 - 155425
ISSN:
0556-2805
Resumen:
Monte Carlo MC simulations and finite-size scaling analysis have been carried out to study the critical
behavior in a submonolayer two-dimensional gas of repulsive linear k-mers on a triangular lattice at coverageMC simulations and finite-size scaling analysis have been carried out to study the critical
behavior in a submonolayer two-dimensional gas of repulsive linear k-mers on a triangular lattice at coveragek-mers on a triangular lattice at coverage
k/ 2k+1. A low-temperature ordered phase, characterized by a repetition of alternating files of adsorbed/ 2k+1. A low-temperature ordered phase, characterized by a repetition of alternating files of adsorbed
k-mers separated by k+1 adjacent empty sites, is separated from the disordered state by an order-disorder
phase transition occurring at a finite critical temperature, Tc. The MC technique was combined with the
recently reported free-energy minimization criterion approach FEMCA F. Romá et al., Phys. Rev. B 68,
205407 2003 to predict the dependence of the critical temperature of the order-disorder transformation. The
dependence on k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.-mers separated by k+1 adjacent empty sites, is separated from the disordered state by an order-disorder
phase transition occurring at a finite critical temperature, Tc. The MC technique was combined with the
recently reported free-energy minimization criterion approach FEMCA F. Romá et al., Phys. Rev. B 68,
205407 2003 to predict the dependence of the critical temperature of the order-disorder transformation. The
dependence on k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.Tc. The MC technique was combined with the
recently reported free-energy minimization criterion approach FEMCA F. Romá et al., Phys. Rev. B 68,
205407 2003 to predict the dependence of the critical temperature of the order-disorder transformation. The
dependence on k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.FEMCA F. Romá et al., Phys. Rev. B 68,
205407 2003 to predict the dependence of the critical temperature of the order-disorder transformation. The
dependence on k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.2003 to predict the dependence of the critical temperature of the order-disorder transformation. The
dependence on k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.k of the transition temperature, Tck, observed in MC is in qualitative agreement with FEMCA.
In addition, an accurate determination of the critical exponents has been obtained for adsorbate sizes ranging
between k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.k=1 and 3. For k1, the results reveal that the system does not belong to the universality class of the
two-dimensional Potts model with q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.q=3 k=1, monomers. Based on symmetry concepts, we suggested that the
behavior observed for k=1, 2, and 3 could be generalized to include larger particle sizes k2.k=1, 2, and 3 could be generalized to include larger particle sizes k2.
