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.
Please note that you will need to login with your ILL credentials to download the data.
Download DataThe 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
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.