3 papers
cond-mat.supr-con2019
Analysis of the London penetration depth in Ni-doped CaKFe4As4
D. Torsello, K. Cho, K. R. Joshi +10
We report combined experimental and theoretical analysis of superconductivity in CaK(FeNi)As (CaK1144) for 0, 0.017 and 0.034. To obtain the superfluid dens…
cond-mat.supr-con2019
Quantum phase transition inside the superconducting dome of Ba(FeCo)As probed by optical magneto-sensing using NV-centers in diamond
K. R. Joshi, N. M. Nusran, M. A. Tanatar +6
While unusual normal state properties, such as non-Fermi liquid behavior of the resistivity, are commonly associated with strong quantum fluctuations, evidence for its presence ins…
cond-mat.supr-con2018
Measurements of the lower critical field of superconductors using NV centers in diamond optical magnetometry
K. R. Joshi, N. M. Nusran, K. Cho +5
The lower critical magnetic field, , of superconductors is measured by using ensembles of NV-centers-in-diamond optical magnetometry. The technique is minimally invasive, a…