Theory of Higgs Spectroscopy in superconductors: latest results

Datum

25.02.2026

Zeit

10:30 - 11:30

Sprecher

Dr. Dirk Manske

Zugehörigkeit

Max Planck Institute for Solid State Research, 70569 Stuttgart, Germany

Sprache

en

Hauptthema

Materialien

Host

Rita Taubert

Beschreibung

Higgs spectroscopy is a new and emergent field [1-3] that allows to classify and determine the superconducting order parameter by means of ultra-fast optical spectroscopy. There are two ways to activate the Higgs mode in superconductors, namely a single-cycle ‘quench’ or an adiabatic, multicycle ‘drive’ pulse, both illustrated in Figure 1. In the talk I will review and report on the latest progress on Higgs spectroscopy, in particular on the role of the third-harmonic-generation (THG) [4-6] and the possible IR-activation of the Higgs mode by impurities or external dc current [7,8]. I also provide new predictions for time-resolved ARPES experiments in which, after a quench, a continuum of Higgs mode is observable and a phase information of the superconducting gap function would be possible to extract [9]. As a recent milestone, I discuss recent results on Non-Equilibrium Anti-Stokes Raman Scattering (NEARS) [10] and on two-dimensional coherent spectroscopy [11] where the Higgs mode has been observed experimentally. Finally, we have extended our approach to time-reversal superconductors [12] and find a variety of new possible Higgs modes.

Links

• Seminars at the IFW

Letztmalig verändert: 21.02.2026, 07:36:08