Metamagnetism in the XXZ model with next-to-nearest-neighbor coupling

Abstract

We investigate groundstate energies and magnetization curves in the one dimensional XXZ-model with next to nearest neighbour coupling $\alpha >0$ and anisotropy $\Delta$ ($-1\le \Delta \le 1$) at T=0. In between the familiar ferro- and antiferromagnetic phase we find a transition region -- called metamagnetic phase -- where the magnetization curve is discontinuous at a critical field $B_c(\alpha ,\Delta )$.

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Cited by in corpus (28)

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