Motivated by second harmonic generation data, we have studied possible crystal distortions in herbertsmithite and related copper materials.
Significance and Impact
The resulting valence bond patterns define a nematic spin liquid that breaks inversion. The space groups can also exhibit ferroelectricity.
- We used group theoretical tools (AMPLIMODES and ISODISTORT) to analyze possible crystal distortions consistent with the second harmonic data.
- We catalogued valence bond arrangements for a variety of copper kagome materials that exhibit dimer, zig-zag, pinwheel, herringbone and stripe patterns.
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