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Two S-wave gap symmetry for single crystals of the superconductor BaFe1.8Co0.2As2
- Choi, Ki-Young;
- Kim, Soo Hyun;
- Choi, Changho;
- Jung, Myung-Hwa;
- Wang, X. F.;
- 외 3명
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4초록
To clarify the gap structure of the iron-pnictide superconductors, we synthesized optimally doped single crystals of BaFe1.8CO0.2As2, which had a critical temperature, T-c, of 23.6 K. The initial M-H curve was used to find the lower critical field, H-c1. The full range of the temperature dependence of Fir, was explained by using a two S-wave gap symmetry. We estimate the two gap as Delta(1)(0) = 1.64 +/- 0.2 meV for the small gap and Delta(2)(0) = 6.20 +/- 0.2 meV for the large gap. (C) 2009 Elsevier B.V. All rights reserved.
키워드
FeAs; Iron-based superconductor; Lower critical field; S-wave gap; LAYERED SUPERCONDUCTOR; PENETRATION-DEPTH; 43 K; BA0.6K0.4FE2AS2
- 제목
- Two S-wave gap symmetry for single crystals of the superconductor BaFe1.8Co0.2As2
- 저자
- Choi, Ki-Young; Kim, Soo Hyun; Choi, Changho; Jung, Myung-Hwa; Wang, X. F.; Chen, X. H.; Noh, Jae Dong; Lee, Sung-Ik
- 발행일
- 2010-12
- 유형
- Article; Proceedings Paper
- 권
- 470
- 페이지
- S506 ~ S507