Thermodynamics of the quantum Ising model in the two-dimensional kagome lattice
Journal
Physical Review B - Condensed Matter and Materials Physics
Journal Volume
77
Journal Issue
17
Date Issued
2008
Author(s)
Chern, C.-H.
Abstract
In the classical Ising model on the kagome lattice, there are macroscopically degenerate classical states with exponentially decayed spin correlation. As the singular quantum perturbation is introduced by applying the transverse magnetic field, the quantum ground state remains disordered, dubbed by "disorder by disorder." Here, we compute the temperature dependence of the spin susceptibility and the specific heat for different strengths of the field to understand the effect of the singular quantum perturbation in this system. The relevance to the Zn Cu3 (OH)6 Cl2 will be also commented. © 2008 The American Physical Society.
Type
journal article