Quantum Physics Division
Faculty of PhysicsAdam Mickiewicz University
Publications

The ground-State of the Quantum Spin-1/2 Heisenberg Antiferromagnet on Square-Kagomé Lattice: Resonating Valence Bond Description

P. Tomczak1 , A. Molińska1 , J. Richter2 , J. Schulenburg3

1 Physics Department, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland
2 Institut für Theoretische Physik, Universität Magdeburg, P.O. Box 4120, 39016 Magdeburg, Germany
3 Universitätsrechenzentrum, Universität Magdeburg, P.O. Box 4120, 39016 Magdeburg, Germany

Acta Physica Polonica A, 109 (2006) 781-787 (2006)

Abstract:

In this paper we report on some ground-state properties of the spin-1/2 Heisenberg antiferromagnet on the two-dimensional square-kagomé lattice. Finite N-spin systems were investigated with the use of the resonating valence bond method. Like in the case of spin system on kagomé lattice we find the almost flat dependence of mean singlet length on 1/N.

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