THz- and Infrared Investigations of Iron-Pnictides
THz- and Infrared Investigations of Iron-Pnictides
批准号:
207066774
负责人:
Professor Dr. Martin Dressel
金额:
$0.0万
依托单位国家:
德国
项目类别:
Research Grants
财政年份:
2012
资助国家:
德国
项目状态:
已结题
起止时间:
2011-12-31 至 2015-12-31
中文摘要
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英文摘要
Applying optical methods to iron-pnictides, we want to explore the interaction of magnetism and superconductivity, the multi-band effect, the influence of electronic correlations and the electron-bosonic coupling. From the analysis of our broad-band spectra we obtain information on electronic transitions, the shift of spectral weight, the opening of energy gaps, but also on the low-energy scattering effects. The determination of the superconducting gap, its symmetry, possible states in the gap, and of the superfluid carrier density is crucial for the characterization of the superconducting state. In the Eu-122-compounds the magnetic coupling of the Eu- and Fe-subsystems is of particular importance; it will be tuned by an external magnetic field.
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