Frustrated Honeycomb Heisenberg Antiferromagnet: A Schwinger Boson Approach
Ann Mattsson, Per Fr\"ojdh, Torbj\"orn Einarsson
TL;DR
This paper uses Schwinger-boson mean-field theory to study a frustrated honeycomb lattice antiferromagnet, analyzing spin dynamics, susceptibility, and structure factors across different frustrations and temperatures.
Contribution
It introduces a Schwinger-boson approach to analyze the frustrated honeycomb antiferromagnet, providing insights into spin-wave velocity, susceptibility, and dynamic structure factors.
Findings
Increased Neel stability for large spin S.
Calculated spin-wave velocity and susceptibility as functions of frustration.
Dynamic structure factor varies with temperature and frustration.
Abstract
We analyze the frustrated Heisenberg antiferromagnet defined on a honeycomb lattice using a Schwinger-boson mean-field theory. The spin-wave velocity and the susceptibility are presented as functions of the strength of the frustrating interaction for spin S=1/2, and the dynamic structure factor is calculated for various temperatures and frustrations. For large S, we find an increased Neel stability with respect to the classical case.
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