[1] Kamihara Y, Watanabe T, Hirano M and Hosono H 2008 J.
Am. Chem. Soc. 130 3296

[2] Chen G F, Li Z, Wu D, Li G, Hu W Z, Dong J, Zheng P, Luo J
L and Wang N L 2008 Phys. Rev. Lett. 100 247002

[3] Ren Z A, Yang J, Lu W, Yi W,Che G C, Dong X L, Sun L L and
Zhao Z X 2008 Mater. Research. Inn. 12 105

[4] Chen X H, Wu T, Wu G, Liu R H, Chen H and Fang D F 2008
Nature 453 761

[5] Ren Z A, Yang J, Lu W, Yi W, Shen X L, Li Z C, Che G C,
Dong X L, Sun L L, Zhou F and Zhao Z X 2008 Europhys. Lett.
82 57002

[6] Ren Z A, Che G C, Dong X L, Yang J, Lu W, Yi W, Shen X L,
Li Z C, Sun L L, Zhou F and Zhao Z X 2008 Europhys. Lett.
83 17002

[7] Wang C, Li L J, Chi S, Zhu Z W, Ren Z, Li Y K, Wang Y T,
Lin X, Luo Y K, Jiang S, Xu X F, Cao G H and Xu Z A 2008
Europhys. Lett. 83 67006

[8] Yang J, Li Z C, Lu W, Yi W, Shen X L, Ren Z A, Che G C,
Dong X L, Sun L L, Zhou F and Zhao Z X 2008 Supercond. Sci.
Technol. 21 082001

[9] Wen H H, Mu G, Fang, Yang H and Zhu X Y 2008
Europhys. Lett. 82 17009

[10] Liu R H, Wu G, Wu T, Fang D F, Chen H, Li S Y, Liu K,
Xie Y L, Wang X F, Yang R L, Ding L, He C, Feng D L and Chen X H
2008 Phys. Rev. Lett 101 087001

[11] de la Cruz C, Huang Q, Lynn J W, Li J, Ratcliff II W,
Mook H A, Chen G F, Luo J L, Wang N L and Dai P 2008 Nature
453 899

[12] Li L J, Li Y K, Ren Z, Luo Y K, Lin X, He M, Tao Q, Zhu Z
W, Cao G H and Xu Z A 2008 Phys. Rev. B 78 132506

[13] McGuire M A, Christianson A D, Sefat A S, Sales B C,
Lumsden M D, Jin R, Payzant E A, Mandrus D, Luan Y, Keppens V,
Varadarajan V, Brill J W, Hermann R P, Sougrati M T, Grandjean F and
Long G J 2008 Phys. Rev. B 78 094517

[14] Li Y K, Lin X, Zhu Z W, Wang C, Li L J, Luo Y K, He M,
Tao Q, Li H Y, Cao G H and Xu Z A 2009 Phys. Rev. B
(submitted) arXiv:0808.3254v1

[15] Sefat A S, McGuire M A, Sales B C, Jin R Y, Howe J Y and
Mandrus D 2008 Phys. Rev. B 77 174503