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Iron Pnictide Superconductors专题出版
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About two years have elapsed since the discovery of superconductivity at about 26 K in F-doped LaFeAsO. Within this short period, significant contributions have been achieved and the superconductivity temperature now reaches about 57 K. We also understand that the multiband effect and antiferromagnetic spin fluctuations are two essential ingredients for superconductivity to occur. Improving the Tc to reach higher values and uncovering the superconducting mechanism are the two current major topics in the research of iron pnictide superconductors. In this issue, we publish 10 papers of original research, including: the fabrication of a new superconductor, Sr2VO3-d FeAs with different oxygen deficiencies; new methods to fabricate FeCr and investigation of the far-infrared reflectance; the magnetism and superconductivity in the Co-doped EuFe2As2, the double-doping effect in LaFeAs1-xSbxO1-yFy; and the evolution of magnetism and superconductivity in a Sb-doped FeSe compound. We also present a paper on the low temperature specific heat of Ni-doped Ba122, which demonstrates the absence of line nodes in a superconductor. We hope all these interesting results will stimulate the progress of research on iron-based superconductors and push the field towards two major targets mentioned above.
WEN HaiHu
Professor WEN HaiHu is the current group leader of the Institute of Physics, Chinese Academy of Sciences; a PhD supervisor; the Chairman of the National Basic Research Project of China for Superconductivity Research (materials and fundamental mechanism, 2006–2010); an editorial member of Physica C (Holland), Chinese Physics Letters and SCIENCE CHINA Physics, Mechanics & Astronomy and Physics (in Chinese); and an associate fellow of Canada Institute for Advanced Research in the Far East region. He works in the area of vortex dynamics, mixed state and electronic properties, critical fluctuation and pairing mechanism of superconductors, has published about 220 papers in internationally recognized journals and given about 50 invited speeches at international conferences. Professor WEN received the Outstanding Chinese Young Scholar’s Foundation from the National Natural Science Foundation of China in 1998, the National Natural Science Award of China in 2004 (second grade), the Qiu Shi Science & Technologies Foundation in 2009 (Hong Kong) and most recently, the Achievement in Asia Award (Robert T. Poe Prize) for 2010.
Contents Vol.53 No.7 July 2010
Recent Development of Iron Pnictide Superconductors
Superconductivity and normal state magnetoresistance in superconducting FeSe:Sb.............................................................................. 1180
....
Heat treatment effects on the superconducting properties of Ag-doped SrKFeAs compounds................................................................ 1187
.... ZHANG ZhiYu, WANG Lei, QI YanPeng, GAO ZhaoShun, WANG DongLiang, ZHANG XianPing & MA YanWei
Magnetic properties of cobalt-based oxypnictide SmCoAsO.................................................................................................................. 1194
.... LI YuKe, TONG Jun, HAN Han, ZHANG Li, TAO Qian,
Superconducting properties of “
.... WANG XianCheng, LIU QingQing, LV YuXi, DENG Zheng, ZHAO Kan, YU RiCheng, ZHU JinLong & JIN ChangQing
Structural and transport properties of Sr2VO3-d FeAs superconductors with different oxygen deficiencies.............................................. 1202
.... HAN Fei, ZHU XiYu, MU Gang, CHENG Peng, SHEN Bing, ZENG Bin & WEN HaiHu
Low temperature properties of pnictide CrAs single crystal.................................................................................................................... 1207
.... WU Wei, ZHANG XiaoDong, YIN ZhiHua, ZHENG Ping, WANG NanLin & LUO JianLin
Cobalt-doping effects in single crystalline and polycrystalline EuFe2-xCoxAs2 compounds..................................................................... 1212
.... CHEN XiaoBo, REN ZhiAn, DING HongSheng & LIU LiHua
Effect of annealing on superconductivity in Fe1+y(Te1-xSx) system.......................................................................................................... 1216
.... DONG ChiHeng, WANG HangDong, YANG JinHu, QIAN Bin, CHEN Jian, LI ZuJuan, YUAN HuiQiu & FANG MingHu
Low temperature specific heat in BaFe1.9Ni0.1As2 single crystals............................................................................................................. 1221
.... ZENG Bin, MU Gang, LUO HuiQian & WEN HaiHu
Structural and superconducting properties of LaFeAs1-xSbxO1-yFy.......................................................................................................... 1225
.... WANG
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