Exotic phases of frustrated antiferromagnet LiCu2O2

Abstract

7Li NMR spectra were measured in a magnetic field up to 17 T at temperatures 5-30 K on single crystalline LiCu2O2. Earlier reported anomalies on magnetization curves correspond to magnetic field values where we observe changes of the NMR spectral shape. For the interpretation of the field and temperature evolutions of our NMR spectra, the magnetic structures were analyzed in the frame of the phenomenological theoretical approach of the Dzyaloshinskii-Landau theory. A set of possible planar and collinear structures was obtained. Most of these structures have an unusual configuration; they are characterized by a two-component order parameter and their magnetic moments vary harmonically not only in direction, but also in size. From the modeling of the observed spectra, a possible scenario of magnetic structure transformations is obtained.

arXiv comment17 pages, 14 figures

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Cited by in corpus (5)

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• Spiral plane flops in frustrated helimagnets in external magnetic field
• NMR study of magnetic structure and hyperfine interactions in binary helimagnet FeP
• Competing magnetic phases in the frustrated spin-1/2 chain compound $\beta$-TeVO${}_4$ probed by NMR
• Determination of superexchange interactions for the CuO${}_2$ chains in LiCu${}_2$O${}_2$