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Infrared Measurement of the Pseudogap of P-Doped and Co-Doped High-Temperature BaFe2As2 Superconductors
- Moon, Soonjae;
- Schafgans, Alexander A.;
- Kasahara, Shigeru;
- Shibauchi, Takasada;
- Terashima, Takahito;
- 외 8명
WEB OF SCIENCE
64SCOPUS
64초록
We report on infrared studies of charge dynamics in a prototypical pnictide system: the BaFe2As2 family. Our experiments have identified hallmarks of the pseudogap state in the BaFe2As2 system that mirror the spectroscopic manifestations of the pseudogap in the cuprates. The magnitude of the infrared pseudogap is in accord with that of the spin-density-wave gap of the parent compound. By monitoring the superconducting gap of both P- and Co-doped compounds, we find that the infrared pseudogap is unrelated to superconductivity. The appearance of the pseudogap is found to correlate with the evolution of the antiferromagnetic fluctuations associated with the spin-density-wave instability. The strong-coupling analysis of infrared data further reveals the interdependence between the magnetism and the pseudogap in the iron pnictides.
키워드
- 제목
- Infrared Measurement of the Pseudogap of P-Doped and Co-Doped High-Temperature BaFe2As2 Superconductors
- 저자
- Moon, Soonjae; Schafgans, Alexander A.; Kasahara, Shigeru; Shibauchi, Takasada; Terashima, Takahito; Matsuda, Yuuji; Tanatar, Makariy A.; Prozorov, Ruslan; Thaler, Alexander N.; Canfield, Paul C.; Sefat, Athena S.; Mandrus, David G.; Basov, Dimitri N.
- 발행일
- 2012-07
- 유형
- Article
- 권
- 109
- 호
- 2
- 페이지
- 1 ~ 6