275 citations · 298 across the 14 of their papers we have counts for
14 papers
Coherent driving of displacive Higgs fluctuations in superconductors
Jacopo Fiore, Irene Zanotti, Kota Katsumi +4
Intense phase-stable terahertz (THz) laser pulses can drive collective modes coherently via multi-photon excitation pathways in a manner different than the standard resonant mechan…
Derivation and application of a general scaling relation between the dc and asymptotic high-frequency optical Hall responses
E. Abelev, R. Romero, N. P. Armitage
Based on the Kramers-Krong relations, we derive and apply a quite general expression that that relates the low frequency quasi-dc Hall conductivity to the asymptotic high frequency…
Reconciling strange metal transport in CeCoIn through the difference of optical and cyclotron effective masses
Jingyuan Wang, Zhenisbek Tagay, Liyu Shi +10
The strange metal behavior in cuprate superconductors - characterized by linear in temperature resistivity and anomalous Hall transport - stands in stark contrast to the expectatio…
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…
Decoupling momentum and energy relaxation rates in cuprate strange metals via giant THz nonlinearities
Dipanjan Chaudhuri, David Barbalas, Fahad Mahmood +7
Understanding the -linear normal-state resistivity of cuprates remains a central physics challenge. The associated momentum relaxation rate, , saturates near the conjecture…
Absence of two-phonon quasi-elastic scattering in the normal state of doped--SrTiO by THz pump-probe spectroscopy
K. Santhosh Kumar, David Barbalas, Rishi Bhandia +4
Multi-pulse nonlinear THz spectroscopies enable a new understanding of interacting metallic systems via their sensitivity to novel correlation functions. Here, we investigated the…
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…
Anomalous electronic energy relaxation and soft phonons in the Dirac semimetal CdAs
Rishi Bhandia, David Barbalas, Run Xiao +5
We have used a combination of linear response time-domain THz spectroscopy (TDTS) and high-field non-linear THz spectroscopy to separately probe the electronic momentum and energy…
Energy Relaxation and dynamics in the correlated metal SrRuO via THz two-dimensional coherent spectroscopy
David Barbalas, Ralph Romero, Dipanjan Chaudhuri +6
Separating out the contributions of different scattering channels in strongly interacting metals is crucial in identifying the mechanisms that govern their properties. While moment…
Low energy electrodynamics and a hidden Fermi liquid in the heavy-fermion CeCoIn
L. Y. Shi, Zhenisbek Tagay, Jiahao Liang +6
We present time-domain THz spectroscopy of thin films of the heavy-fermion superconductor CeCoIn. Below the 40 K Kondo coherence temperature, a narrow Drude-like peak…
Sub-THz momentum drag and violation of Matthiessen's rule in an ultraclean ferromagnetic SrRuO metallic thin film
Youcheng Wang, G. Bosse, H. P. Nair +9
SrRuO, a ferromagnet with an approximately 160\,K Curie temperature, exhibits a dependent dc resistivity below 30 K. Nevertheless, previous optical studies in t…
Fermi Surface, Surface States, and Surface Reconstruction in Sr2RuO4
A. Damascelli, D. H. Lu, K. M. Shen +9
The electronic structure of Sr2RuO4 is investigated by high angular resolution ARPES at several incident photon energies. We address the controversial issues of the Fermi surface (…