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Low-lying excitations and magnetization process of coupled tetrahedral systems

K. Totsuka·H-J. Mikeska
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Abstract

We investigate low-lying singlet and triplet excitations and the magnetization process of quasi-1D spin systems composed of tetrahedral spin clusters. For a class of such models, we found various exact low-lying excitations; some of them are responsible for the first-order transition between two different ground states formed by local singlets. Moreover, we find that there are two different kinds of magnetization plateaus which are separated by a first-order transition.

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K. Totsuka, H-J. Mikeska. 2002-07-06. Low-lying excitations and magnetization process of coupled tetrahedral systems. https://doi.org/10.1103/physrevb.66.054435

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