Superconductivity of FeSe0.5Te0.5 Thin Films Grown by Pulsed Laser Deposition

被引：49
|
作者：
Imai, Yoshinori [1 ,3 ]
Tanaka, Ryo [1 ,3 ]
Akiike, Takanori [1 ,3 ]
Hanawa, Masafumi [2 ,3 ]
Tsukada, Ichiro [2 ,3 ]
Maeda, Atsutaka [1 ,3 ]
机构：
[1] Univ Tokyo, Dept Basic Sci, Meguro Ku, Tokyo 1538902, Japan
[2] Cent Res Inst Elect Power Ind, Kanagawa 2400196, Japan
[3] Japan Sci & Technol Agcy, Transformat Res Project Iron Pnictides, Chiyoda Ku, Tokyo 1020075, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2010年 / 49卷 / 02期
关键词：
FESE;
D O I：
10.1143/JJAP.49.023101
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
FeSe0.5Te0.5 thin films with a PbO-type structure are successfully grown on MgO(100) and LaSrAlO4(001) substrates from FeSe0.5Te0.5 or FeSe0.5Te0.75 polycrystalline targets by pulsed laser deposition. The film deposited on the MgO substrate (film thickness: similar to 55 nm) shows superconductivity at 10.6 K (onset) and 9.2 K (zero resistivity). On the other hand, the film deposited on the LaSrAlO4 substrate (film thickness: similar to 250 nm) exhibits superconductivity at 5.4 K (onset) and 2.7 K (zero resistivity). This suggests the strong effect of substrate materials and/or the c-axis length on the superconducting properties of FeSe0.5Te0.5 thin films. (C) 2010 The Japan Society of Applied Physics
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页数：5
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