Frustrated Honeycomb Heisenberg Antiferromagnet: A Schwinger Boson Approach

Details Frustrated Honeycomb Heisenberg Antiferromagnet: A Schwinger Boson Approach Frustrated Honeycomb Heisenberg Antiferromagnet: A Schwinger Boson Approach

1993-10-27

arxiv.org/abs/cond-mat/9310063v1

Physics

Condensed Matter

14 pages, RevTeX 3.0. G\"oteborg ITP 93-36. Seven figures (not included) can be ordered from Ann Mattsson (tfkam@fy.chalmers.s

Scientific paper

10.1103/PhysRevB.49.3997

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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