242 citations · 1k across the 38 of their papers we have counts for
8 papers · 1 filter
Anomalous superconducting state in LiFeAs implied by the As Knight shift measurement
S. -H. Baek, L. Harnagea, S. Wurmehl +2
As NMR investigation of a single crystal of superconducting LiFeAs is presented. The Knight shift and the \textit{in situ} ac susceptibility measurements as a function of te…
Microwave absorption study of pinning regimes in single crystals
Yu. Talanov, N. Beisengulov, G. Kornilov +8
Magnetic field dependent modulated microwave absorption (MMWA) measurements have been carried out to investigate vortex pinning effects in single crystals of the iron-based high-Tc…
Acoustic and optical phonon dynamics from femtosecond time-resolved optical spectroscopy of superconducting iron pnictide Ca(Fe_0.944Co_0.056)_2As_2
Sunil Kumar, L. Harnagea, S. Wurmehl +2
We report temperature evolution of coherently excited acoustic and optical phonon dynamics in superconducting iron pnictide single crystal Ca(Fe_0.944Co_0.056)_2As_2 across the spi…
Ultrafast quasiparticle dynamics in superconducting iron pnictide CaFe1.89Co0.11As2
Sunil Kumar, L. Harnagea, S. Wurmehl +2
Nonequilibrium quasiparticle relaxation dynamics is reported in superconducting CaFe1.89Co0.11As2 single crystal using femtosecond time-resolved pump-probe spectroscopy. The carrie…
Gap-dependent quasiparticle dynamics and coherent acoustic phonons in parent iron pnictide CaFe2As2 across the spin density wave phase transition
Sunil Kumar, L. Harnagea, S. Wurmehl +2
We report ultrafast quasiparticle (QP) dynamics and coherent acoustic phonons in undoped CaFe_2As_2 iron pnictide single crystals exhibiting spin-density wave (SDW) and concurrent…
Evidence for a vortex-glass transition in superconducting Ba(FeCo)As
G. Prando, R. Giraud, S. Aswartham +6
Measurements of magneto-resistivity and magnetic susceptibility were performed on single crystals of superconducting Ba(FeCo)As close to the conditions…