Field-induced transition from even to odd parity superconductivity in CeRh2As2
Prof. Elena Hassinger, Max Planck Institute for Chemical Physics of Solids
Abstract: I will report on the discovery of unconventional superconductivity in CeRh2As2. Although it appears at temperatures below 1 K, the superconducting state is extremely robust under the application of magnetic fields and presents a unique phase diagram.
Most interestingly, a field-induced phase transition within the superconducting state appears for c-axis fields in magnetisation, susceptibility and magnetostriction indicating two separate superconducting states.
The phase diagram can be understood by taking into account the staggered spin-orbit coupling at the Ce position. In that picture, the magnetic field drives a transition from even to odd parity superconductivity. The angle dependence of the critical fields strongly reinforces this interpretation. In the end, I will also give information on the ordered phases found in the normal state.
The phase diagram can be understood by taking into account the staggered spin-orbit coupling at the Ce position. In that picture, the magnetic field drives a transition from even to odd parity superconductivity. The angle dependence of the critical fields strongly reinforces this interpretation. In the end, I will also give information on the ordered phases found in the normal state.
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Zoom link: https://espci.zoom.us/j/83168737312?pwd=MTUxa2t5WE9MV05JczBESzR2N0daZz09
ID: 831 6873 7312
Password: LEFNeel
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