Spin wave theory for antiferromagnetic XXZ spin model on a triangle lattice in the presence of an external magnetic field

TL;DR

This paper applies spin wave theory to an antiferromagnetic XXZ model on a triangular lattice under an in-plane magnetic field, revealing how the field influences quantum fluctuations and magnetization, with implications for quantum phase transitions.

Contribution

It introduces a detailed spin wave analysis of the XXZ model on a triangular lattice in a magnetic field, highlighting the field's role in quantum fluctuations and phase transitions.

Findings

Magnetic field enhances quantum fluctuations.

Field reduces sublattice magnetization at intermediate strengths.

Implications for quantum phase transition from spin solid to spin liquid.

Abstract

Spin wave theory is applied to a quantum antiferromagnetic XXZ model on a triangle lattice in the presence of an in-plane magnetic field. The effect of the field is found to enhance the quantum fluctuation and to reduce the sublattice magnetization at the intermediate field strength in the anisotropic case. The possible implication to the field driven quantum phase transition from a spin solid to a spin liquid is discussed.