K. Terashima
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
K. Terashima has a total of 12 co-authors. Here are the top co-authors by number of shared publications:
G. H. Cao
Department of Physics, Zhejiang University, Hangzhou 310027, China
1 shared publicationH. Ding
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
1 shared publicationJ. H. Bowen
Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
1 shared publicationK. Nakayama
Department of Physics, Tohoku University, Sendai 980-8578, Japan
1 shared publicationL. J. Li
Department of Physics, Zhejiang University, Hangzhou 310027, China
1 shared publicationP. Richard
World Premier International Research Center, Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
1 shared publication
Latest Publications
- Open Access
- 5 May 2009
- Published by National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 106 (18) , 7330-7333
Fermi surface nesting induced strong pairing in iron-based superconductors
The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation of Fermi-surface (FS)-dependent nodeless superconducting gaps suggested that inter-FS interactions may play a crucial role in superconducting pairing. In the optimally hole-doped Ba 0.6 K 0.4 Fe 2 As 2 , the pairing strength is enhanced simultaneously (2Δ/T c ≈7) on the nearly nested FS pockets, i.e., the inner hole-like (α) FS and the 2 hybridized electron-like FSs, whereas the pairing remains weak (2Δ/T c ≈3.6) in the poorly nested outer hole-like (β) FS. Here, we report that in the electron-doped BaFe 1.85 Co 0.15 As 2 , the FS nesting condition switches from the α to the β FS due to the opposite size changes for hole- and electron-like FSs upon electron doping. The strong pairing strength (2Δ/T c ≈6) is also found to switch to the nested β FS, indicating an intimate connection between FS nesting and superconducting pairing, and strongly supporting the inter-FS pairing mechanism in the iron-based superconductors.
- 5 May 2009
- Published by National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 106 (18) , 7330-7333
Open AccessFermi surface nesting induced strong pairing in iron-based superconductors
The discovery of high-temperature superconductivity in iron pnictides raised the possibility of an unconventional superconducting mechanism in multiband materials. The observation of Fermi-surface (FS)-dependent nodeless superconducting gaps suggested that inter-FS interactions may play a crucial role in superconducting pairing. In the optimally hole-doped Ba 0.6 K 0.4 Fe 2 As 2 , the pairing strength is enhanced simultaneously (2Δ/T c ≈7) on the nearly nested FS pockets, i.e., the inner hole-like (α) FS and the 2 hybridized electron-like FSs, whereas the pairing remains weak (2Δ/T c ≈3.6) in the poorly nested outer hole-like (β) FS. Here, we report that in the electron-doped BaFe 1.85 Co 0.15 As 2 , the FS nesting condition switches from the α to the β FS due to the opposite size changes for hole- and electron-like FSs upon electron doping. The strong pairing strength (2Δ/T c ≈6) is also found to switch to the nested β FS, indicating an intimate connection between FS nesting and superconducting pairing, and strongly supporting the inter-FS pairing mechanism in the iron-based superconductors.