Pressure-dependence of the electronic order in the kagome metal CsV3Sb5

The aim of this proposal is to investigate the electronic order in the newly discovered Z 2 kagome metal CsV3Sb5 as a function of pressure and temperature. CsV3Sb5 has become a highly topical material due to its unconventional superconducting phase. Given its complex electronic structure, it is thought that this state may host exotic quasiparticles like Majorana bound states. Interestingly, it has now been discovered that superconductivity in CsV3Sb5 is intimately related to competing charge density wave (CDW) instabilities, and, crucially, these electronic uperstructures appear to be highly tuneable by hydrostatic pressure. However, so far, a detailed pressure-dependent crystallographic study and a characterization of the CDW order, its symmetry and mechanism has not been achieved. Here, we propose a high-pressure single crystal x-ray diffraction (XRD) study to fill this gap and to shed light on the interaction between electronic order and superconductivity in Z2 kagome metals.