Article
Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy
Physical Review Letters
Document Type
Article
Department/Program
Physics
Pub Date
4-1-2012
Abstract
We report an infrared optical study of the pnictide high-temperature superconductor BaFe1.84Co0.16As2 and its parent compound BaFe2As2. We demonstrate that electronic correlations are moderately strong and do not change across the spin-density wave transition or with doping. By examining the energy scale and direction of spectral weight transfer, we argue that Hund's coupling J is the primary mechanism that gives rise to correlations.
DOI
https://doi.org/10.1103/PhysRevLett.108.147002
Disciplines
Citation Information
A. A. Schafgans, S. J. Moon, (...), M. M. Qazilbash, et al.. "Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy" Physical Review Letters Vol. 108 Iss. 14 (2012) Available at: http://works.bepress.com/m-qazilbash/6/
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