Induction of high-temperature superconductivity in pulsed laser ablated La2CuO4 thin films by room temperature chemical oxidation

被引:12
|
作者
Lees, ST
Edwards, PP
Gameson, I
Jones, MO
Slaski, M
Rial, C
Amador, U
Moran, E
机构
[1] UNIV BIRMINGHAM,SCH CHEM,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
[2] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
[3] UNIV COMPLUTENSE MADRID,FAC CIENCIAS QUIM,DEPT QUIM INORGAN,E-28040 MADRID,SPAIN
[4] UNIV COMPLUTENSE MADRID,FAC CIENCIAS QUIM,CAI DIFRACC RAYOSX,E-28040 MADRID,SPAIN
关键词
D O I
10.1002/adma.19970091013
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Communication: Facile fabrication of high-temperature superconducting La2CuO4 thin films through the combination of two seemingly disparate techniques is reported. Pulsed laser ablation is used to produce stoichiometric, c-axis oriented La2CuO4 thin films similar to 3700 Angstrom in thickness. The convenient method of controlled room-temperature chemical oxidation using aqueous sodium bromite is then utilized to introduce excess holes in the valance band of La2CuO4. This induces superconductivity in the otherwise antiferromagnetic semiconductor.
引用
收藏
页码:823 / &
页数:5
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