Finite-size-scaling study of a two-dimensional lattice-gas model with a tricritical point

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

Organisaatiot

  • Institut für Festkörperforschung der Kernforschungsanlage Jülich
  • Temple University

Kuvaus

We present a finite-size-scaling study of a two-dimensional square-lattice-gas model with nearest-neighbor repulsion and next-nearest-neighbor attraction. This system may be used as a simplified model of adsorbates on transition-metal (100) surfaces. An accurate determination of the tricritical temperature is obtained by the utilization of the degeneracy of the three largest eigenvalues of the transfer matrix at a tricritical point. We obtain the phase diagram and critical and tricritical exponents, all quite consistent with previously known results. We also find that a recent conjecture relating the critical exponent η to the correlation-length amplitude seems to work well even at the tricritical point.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut2686-2692
JulkaisuPhysical Review B
Vuosikerta28
Numero5
TilaJulkaistu - 1983
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

ID: 9935795