Ultrafast control of material physical properties represents a rapidly developing field in
condensed matter physics. Yet, accessing the long-lived photoinduced electronic states is …

Recent findings of new Higgs modes in unconventional superconductors require a
classification and characterization of the modes allowed by nontrivial gap symmetry. Here …

Broadband THz pulses enable ultrafast electronic transport experiments on the nanoscale
by coupling THz electric fields into the devices with antennas, asperities, or scanning probe …

Ta 2 Ni Se 5 became one of the most investigated candidate materials for hosting an
excitonic insulator ground state. Many studies describe the corresponding phase transition …

We show that in electron-hole bilayers with excitonic orders arising from conduction and
valence bands formed by atomic orbitals that have different parities, nonzero interlayer …

The excitonic insulator is an intriguing correlated electron phase formed of condensed
excitons. A promising candidate is the small band gap semiconductor Ta 2 NiSe 5. Here we …

In Supraleitern existiert eine kollektive Amplitudenmode des Ordnungsparameters, welche
Higgs-Mode genannt wird. Mit Hilfe der in den letzten Jahren aufkommenden THz Laser …