4 papers
Terahertz range polarization rotation in the candidate time-reversal symmetry breaking superconductor BiNi
Ralph Romero, Zhenisbek Tagay, Jiahao Liang +3
Here we report the observation of time-reversal symmetry (TRS) breaking superconductivity in a BiNi bilayer using terahertz (THz) polarimetry. Leveraging a novel high-precision THz…
Planckian scattering and parallel conduction channels in the iron chalcogenide superconductors FeTeSe
Ralph Romero, Hee Taek Yi, Seongshik Oh +1
The remarkable linear in temperature resistivity of the cuprate superconductors, which extends in some samples from to the melting temperature, remains unexplained. Although…
Energy and momentum relaxation through the Curie temperature in an itinerant ferromagnet
Rishi Bhandia, Tim Priessnitz, Jiahao Liang +8
In this work, we combine conventional linear response time-domain THz spectroscopy with non-linear THz-pump THz-probe techniques to study metallic strained thin films of $\mathrm{C…
Amplitude mode in a multi-gap superconductor MgB investigated by terahertz two-dimensional coherent spectroscopy
Kota Katsumi, Jiahao Liang, Ralph Romero +3
We have investigated the terahertz (THz) nonlinear response of the multigap superconductor MgB, using THz two-dimensional coherent spectroscopy (THz 2DCS). With broadband THz d…