Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy
- Title
- Electronic Correlations and Unconventional Spectral Weight Transfer in the High-Temperature Pnictide BaFe2-xCoxAs2 Superconductor Using Infrared Spectroscopy
- Author
- 문순재
- Keywords
- CHARGE DYNAMICS; IRON PNICTIDES; T-C; ELECTRODYNAMICS; STRENGTH
- Issue Date
- 2012-04
- Publisher
- American Physical Society
- Citation
- Physical Review Letters, 2012, 108(14), P.147002
- 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.
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.147002http://hdl.handle.net/20.500.11754/48991
- ISSN
- 0031-9007
- DOI
- 10.1103/PhysRevLett.108.147002
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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