103 citations · 207 across the 11 of their papers we have counts for
11 papers
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…
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…
Revealing novel aspects of light-matter coupling in terahertz two-dimensional coherent spectroscopy: the case of the amplitude mode in superconductors
Kota Katsumi, Jacopo Fiore, Mattia Udina +7
Recently developed terahertz (THz) two-dimensional coherent spectroscopy (2DCS) is a powerful technique to obtain materials information in a fashion qualitatively different from ot…
Disorder-enhanced effective masses and deviations from Matthiessen's rule in PdCoO thin films
David Barbalas, Anaëlle Legros, Gaurab Rimal +2
The observation of hydrodynamic transport in the metallic delafossite PdCoO has increased interest in this family of highly conductive oxides, but experimental studies so far h…
Anomalous high-temperature THz nonlinearity in superconductors near the metal-insulator transition
Dipanjan Chaudhuri, David Barbalas, Ralph Romero +5
The interplay of strong disorder and superconductivity is a topic of long-term interest in condensed matter physics. Here we explore the nonlinear THz response of superconducting N…
An optical investigation of the heavy fermion normal state in superconducting UTe
Sirak M. Mekonen, Chang-Jong Kang, Dipanjan Chaudhuri +5
The recently discovered superconductor, UTe, has attracted immense scientific interest due to the experimental observations that suggest odd-parity superconductivity. It is bel…
Terahertz Electrodynamics of Mixed-Valent YbAl and LuAl Thin Films
D. Barbalas, S. Chatterjee, D. G. Schlom +2
We present THz measurements of thin films of mixed-valent YbAl and its structural analogue LuAl. Combined with traditional Fourier transform infrared (FTIR) spectroscopy, t…
A Large Effective Phonon Magnetic Moment in a Dirac Semimetal
Bing Cheng, T. Schumann, Y. C. Wang +4
We investigated the magnetoterahertz response of the Dirac semimetal CdAs and observed a particularly low frequency optical phonon, as well as a very prominent and field se…
Terahertz conductivity of the magnetic Weyl semimetal MnSn films
Bing Cheng, Youcheng Wang, D. Barbalas +3
MnSn is a non-collinear antiferromagnet which displays a large anomalous Hall effect at room temperature. It is believed that the principal contribution to its anomalous Hall…