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Optical conductivity signatures of strong correlations and multiband superconductivity in infinite-layer nickelates
Woo Jin Kim, Kyuho Lee, Eun Kyo Ko +6
Since the discovery of superconductivity in infinite-layer nickelates, there have been extensive efforts to unravel their electronic structure and pairing mechanism. In particular,…
On infrared pseudogap in cuprate and pnictide high-temperature superconductors
S. J. Moon, Y. S. Lee, A. A. Schafgans +15
We investigate infrared manifestations of the pseudogap in the prototypical cuprate and pnictide superconductors: YBa2Cu3Oy and BaFe2As2 (Ba122) systems. We find remarkable similar…
Infrared Measurement of the Pseudogap in P-Doped and Co-Doped BaFe2As2 High-Temperature Superconductors
S. J. Moon, A. A. Schafgans, S. Kasahara +10
We report on infrared studies of charge dynamics in a prototypical pnictide system: the BaFe2As2 family. Our experiments have identified hallmarks of the pseudogap state in the BaF…
Evidence of precursor superconductivity as high as 180 K from infrared spectroscopy
A. Dubroka, M. Roessle, K. W. Kim +13
We show that a multilayer analysis of the infrared c-axis response of RBa2Cu3O7-d (R=Y, Gd, Eu) provides important new information about the anomalous normal state properties of un…
Dual Character of Magnetism in Ferropnictides: Insights from Optical Measurements
S. J. Moon, J. H. Shin, D. Parker +10
We investigate the electronic structure of EuFeAs using optical spectroscopy and first-principles calculations. At low temperature we observe the evolution of \textit{t…