The authors introduce a new spectroscopic technique for studying Higgs modes in superconductors and apply it to a cuprate superconductor. The method involves a soft quench of the Mexican-Hat potential, populating Higgs modes of different symmetries, which are then probed by non equilibrium anti-Stokes Raman scattering.
- Tomke E. Glier
- Sida Tian
- Michael Rübhausen