Abstract
We discuss typical features of magnetization curves of quantum anti- ferromagnets. For a class of frustrated spin lattices including the kagomé lattice we find a linear dependence of the energy on the quantum number of total S z. This linearity leads to a jump in the magnetization versus field curve near saturation and is connected with a set of exact eigenstates consisting of independent localized magnons. The observed jump is a true macroscopic quantum effect which is also of experimental relevance since it occurs in many different lattices
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Schulenburg, J., Richter, J. (2003). Macroscopic Magnetization Jumps in Strongly Frustrated Quantum Spin Lattices. In: Landau, D.P., Lewis, S.P., Schüttler, HB. (eds) Computer Simulation Studies in Condensed-Matter Physics XV. Springer Proceedings in Physics, vol 90. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55522-0_5
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DOI: https://doi.org/10.1007/978-3-642-55522-0_5
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