Emergent degrees of freedom in a nearly isolated s=1/2 triangular system KBa3Ca4Cu3V7O28
KBa3Ca4Cu3V7O28 provides a nice example of quasi-isolated spin 1/2 equilateral triangles, arranged on a triangular lattice and forming a breathing-kagomé network. According to a recent NMR study, the intradimer exchange interaction yields two quadruplet states separated by about 20-30 meV. Effective degrees of freedom, formed by the lowest energy quadruplet, are thus a collection of two effective spin ½ coming in two flavors and corresponding to left and right chiralities. Preliminary measurements indicate the presence of ferromagnetic-like correlations, which decrease with decreasing temperature, almost vanishing in the 1-10 K range, and increasing again but centered at Q = 0.55 Å-1 at dilution temperature. We think this intriguing evolution signals the formation of those emergent degrees of freedom. We would like to tackle this issue at D7.
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The recommended format for citing this dataset in a research publication is in the following format:
GRENIER Beatrice; MANGIN-THRO Lucile; PETIT Sylvain; SIMONET Virginie and ZORKO Andrej. (2021). Emergent degrees of freedom in a nearly isolated s=1/2 triangular system KBa3Ca4Cu3V7O28. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-32-929
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This data is not yet public
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