Abstract
The 1/n-expansion is applied to a classical one dimensionaln-vector model in an external field with nearest and next nearest neighbour exchange interactions of both signs. Various effects caused by helical spin structures are discussed for the Heisenberg magnet (n=3).—For the spherical model with multi-neighbour interactions “Lifshitz points of higher order” are found.
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Selke, W. Spin chains with nearest and next nearest neighbour interactions. Z Physik B 27, 81–84 (1977). https://doi.org/10.1007/BF01315508
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DOI: https://doi.org/10.1007/BF01315508