Kac-Moody symmetries of critical ground states

J Kondev, CL Henley - Nuclear Physics B, 1996 - Elsevier
The symmetries of critical ground states of two-dimensional lattice models are investigated.
We show how mapping a critical ground state to a model of a rough interface can be used to …

Zero-temperature phase transitions of an antiferromagnetic Ising model of general spin on a triangular lattice

C Zeng, CL Henley - Physical Review B, 1997 - APS
We map the ground-state ensemble of antiferromagnetic Ising model of spin-S on a
triangular lattice to an interface model whose entropic fluctuations are proposed to be …

A constrained Potts antiferromagnet model with an interface representation

JK Burton Jr, CL Henley - Journal of Physics A: Mathematical and …, 1997 - iopscience.iop.org
We define a 4-state Potts model ensemble on the square lattice, with the constraints that
neighbouring spins must have different values, and that no plaquette may contain all four …

[HTML][HTML] Absence of long-range order in a three-dimensional stacked Ising antiferromagnet on kagome lattice

M Semjan, M Žukovič - Physics Letters A, 2022 - Elsevier
We study the possibility of long-range ordering (LRO) in a 3D system of vertically stacked
layers of Ising antiferromagnet on a kagome lattice (SIAKL). Monte Carlo simulations are …

Residual entropy of spin-s triangular Ising antiferromagnet

M Žukovič - The European Physical Journal B, 2013 - Springer
We employ a thermodynamic integration method (TIM) to establish the values of the residual
entropy for the geometrically frustrated spin-s triangular Ising antiferromagnet, with the spin …

Phase transitions in a triangular Blume-Capel antiferromagnet

M Žukovič, A Bobák - Physical Review E—Statistical, Nonlinear, and Soft …, 2013 - APS
We study the critical behavior of a frustrated Blume-Capel (BC) antiferromagnet on a
triangular lattice by Monte Carlo simulations. For a reduced single-ion anisotropy strength …

Pretransitional short-range ordering in a triangular lattice of Ising spin chains

V Hardy, V Caignaert, O Pérez, L Hervé, N Sakly… - Physical Review B, 2018 - APS
S r 2 C a 2 CoM n 2 O 9 is made of Ising spin chains distributed on a triangular lattice, with
antiferromagnetic coupling between them. In spite of a unique interchain distance, this …

[HTML][HTML] Entropy of spin clusters with frustrated geometry

M Žukovič, A Bobák - Physics Letters A, 2014 - Elsevier
Geometrically frustrated clusters of Ising spins of different shapes on a triangular lattice are
studied by exact enumeration. The focus is laid on the ground-state energy and residual …

Monte Carlo study of the ordering in a strongly frustrated liquid crystal

S George, C Bentham, X Zeng, G Ungar, GA Gehring - Physical Review E, 2017 - APS
We have performed Monte Carlo simulations to investigate the temperature dependence of
the ordering of the side chains of the X-shaped liquid crystal molecules which are arranged …

[HTML][HTML] Absence of long-range order in a general spin-S kagome lattice Ising antiferromagnet

M Semjan, M Žukovič - Physics Letters A, 2020 - Elsevier
The possibility of the emergence of some kind of long-range ordering (LRO) due to the
increase of multiplicity of the local degrees of freedom (spin value S) is studied in an Ising …