%0 Journal Article
%T Superconductivity in Hole-Doped (Sr1-xKx)Fe2As2<br>
%A CHEN Gen-Fu
%A LI Zheng
%A LI Gang
%A HU Wan-Zheng
%A DONG Jing
%A ZHOU Jun
%A ZHANG Xiao-Dong
%A ZHENG Ping
%A WANG Nan-Lin
%A LUO Jian-Lin
%A <br>
%J 中国物理快报
%D 2008
%I 
%X A series of layered (Sr1-xKx)Fe2As2 compounds with nominal x=0--0.40 are synthesized by solid state reaction method. Similar to other parent compounds of iron-based pnictide superconductors, pure SrFe2As2 shows a strong resistivity anomaly near 210 K, which was ascribed to the spin-density-wave instability. The anomaly temperature is much higher than those observed in LaOFeAs and BaFe2As2, the two prototype parent compounds with ZrCuSiAs- and ThCr2Si2-type structures. K-doping strongly suppresses this anomaly and induces superconductivity. Like in the case of K-doped BaFe2As2, sharp superconducting transitions at Tc38K is observed. We perform the Hall coefficient measurement, and confirm that the dominant carriers are hole-type. The carrier density is enhanced by a factor of 3 in comparison to F-doped LaOFeAs superconductor.
%K 74
%K 70
%K -b
%K 74
%K 62
%K Bf<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=E27DA92E19FE279A273627875A70D74D&aid=F5E3607AD3E948EF54A7ECAD814A28A5&yid=67289AFF6305E306&vid=C5154311167311FE&iid=9CF7A0430CBB2DFD&sid=FA21EF4EF38F00A4&eid=E8D88D2EFF6BA8E2&journal_id=0256-307X&journal_name=中国物理快报&referenced_num=0&reference_num=0