Phenomenological theory of longitudinal spin fluctuations in CsNiCl3
Physical Review B, ISSN: 0163-1829, Vol: 42, Issue: 13, Page: 8783-8786
1990
- 7Citations
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Article Description
The recent observation of longitudinal spin excitations at low temperatures in the spin-1 quasi-one-dimensional antiferromagnet CsNiCl3 is contrary to expectations based on conventional spin-wave theory. Affleck [Phys. Rev. Lett. 62, 474 (1989)] has proposed a field-theory model which attributes this unusual gap-mode fluctuation to quantum effects resulting from the Haldane conjecture. We demonstrate here that the field-theory results are reproduced by a phenomenological Lagrangian formulation of spin waves, in the spirit of Landau and Lifshitz, that has existed in the literature for many years. © 1990 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0642377364&origin=inward; http://dx.doi.org/10.1103/physrevb.42.8783; http://www.ncbi.nlm.nih.gov/pubmed/9995089; https://link.aps.org/doi/10.1103/PhysRevB.42.8783; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevB.42.8783/fulltext; http://link.aps.org/article/10.1103/PhysRevB.42.8783
American Physical Society (APS)
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