Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy

Authors

A. A. Schafgans
S. J. Moon
(...)
M. M. Qazilbash, William & MaryFollow
et al.

Document Type

Article

Department/Program

Physics

Journal Title

Physical Review Letters

Pub Date

4-2012

Volume

108

Issue

14

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.

Recommended Citation

Schafgans, A. A.; Moon, S. J.; (...); Qazilbash, M. M.; and et al., Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy (2012). Physical Review Letters, 108(14).
https://doi.org/10.1103/PhysRevLett.108.147002

DOI

https://doi.org/10.1103/PhysRevLett.108.147002

Publisher Statement

This work is made available for educational and personal use only. Copyright is credited to the authors. Any other uses should be directed to the publisher.