Spin structure factor and thermodynamics in the antiferromagnetic quantum Ising model in the pyrochlore lattice

TL;DR

This study numerically investigates the temperature-dependent spin structure factor and thermodynamics of the antiferromagnetic quantum Ising model on the pyrochlore lattice, revealing spin disorder and matching experimental neutron scattering data.

Contribution

It provides a detailed numerical analysis of the temperature evolution of spin correlations and thermodynamic properties in a frustrated quantum spin system, aligning with experimental observations.

Findings

Reproduces the temperature dependence of pinch point structures.

Corrects entropy estimates from specific heat measurements.

Shows exponential decay of spin correlations in the ground state.

Abstract

We numerically compute the temperature dependence of spin structure factor and thermodynamic quantities in the antiferromagnetic quantum Ising model in the pyrochlore lattice. This model exhibits spin disorder ground state with exponentially-decayed spin correlation. We reproduce the temperature dependence of the pinch point structure in the neutron scattering experiment and correct entropy obtained from the measurement of the specific heat.