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Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopyopen access
- Authors
- Schafgans, Alexander A.; Moon, Soonjae; Pursley, Brennan C.; LaForge, Andrew D.; Qazilbash, Muhammad Mumtaz; Sefat, Athena S.; Mandrus, David G.; Haule, Kristjan; Kotliar, Gabriel B.; Basov, Dimitri N.
- Issue Date
- Apr-2012
- Publisher
- AMERICAN PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v.108, no.14, pp.1 - 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW LETTERS
- Volume
- 108
- Number
- 14
- Start Page
- 1
- End Page
- 5
- ISSN
- 0031-9007
- 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.
- Appears in
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Related Researcher
- Moon, Soon jae
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)