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Phenomenology of bond and flux orders in kagome metals
- Publication Year :
- 2023
-
Abstract
- Despite much experimental and theoretical work, the nature of the charge order in the kagome metals belonging to the family of materials AV$_3$Sb$_5$ (A=Cs,Rb,K) remains controversial. A crucial ingredient for the identification of the ordering in these materials is their response to external perturbations, such as strain or magnetic fields. To this end, we provide a comprehensive symmetry classification of the possible charge orders in kagome materials with a $2\times2$ increase of the unit cell. Motivated by the experimental reports of time-reversal-symmetry breaking and rotational anisotropy, we consider the interdependence of flux and bond orders. Deriving the relevant Landau free energy for possible orders, we study the effect of symmetry-breaking perturbations such as strain and magnetic fields. Our results, thus, provide a roadmap for future tests of these intricate orders.<br />Comment: 15 pages (+7 pages appendix), 4 figures (+6 figures appendix)
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.2307.02528
- Document Type :
- Working Paper