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Susceptibility and Dzyaloshinskii-Moriya interaction in the Haldane gap compound NENP

Hai Huang·Ian Affleck
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Abstract

The Haldane gap material NENP exhibits anomalies in its Knight shift, far infrared absorption and field-dependent gaps, which have been explained using the staggered $g$-tensor that occurs due to the low crystal symmetry. We point out that the low-temperature susceptibility is also anomalous and that a consistent interpretation of all data may require consideration of the Dzyaloshinskii-Moriya interaction.

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Hai Huang, Ian Affleck. 2004-01-12. Susceptibility and Dzyaloshinskii-Moriya interaction in the Haldane gap compound NENP. https://doi.org/10.1103/physrevb.69.184414

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