Plaquette valence bond ordering in a J1–J2 Heisenberg antiferromagnet on a honeycomb lattice

We study an S = 1/2 Heisenberg model on the honeycomb lattice with first and second neighbor antiferromagnetic exchange (J(1)-J(2) model), employing exact diagonalization in both the S(z) = 0 basis and nearest neighbor singlet valence bond (NNVB) basis. We find that for 0.2 < J(2)/J(1) < 0.3,...

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Veröffentlicht in:	Journal of physics. Condensed matter 2011-06, Vol.23 (22), p.226006-226006
Hauptverfasser:	Mosadeq, H, Shahbazi, F, Jafari, S A
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology General theory and models of magnetic ordering Magnetic properties and materials Physics
Online-Zugang:	Volltext
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