22/02/2023
Dr. Wei Zhang (PhD in PHY, currently a postdoc at our department), Prof. Kwing To Lai, Prof. Swee K. Goh and their team published an article "Nodeless Superconductivity in Kagome Metal CsV3Sb5 with and without Time Reversal Symmetry Breaking" in Nano Letters. The team used hydrostatic pressure to tune the phase transition temperature of the charge-density-wave phase, which has been shown to break the time-reversal symmetry. Using critical current measurements and the impurities effect, they further explore the superconducting state, allowing them to conclude that the superconducting gap does not possess any node regardless of the presence of the time-reversal symmetry.
