Suppression of superconductivity by interparticle interactions in Al nanoparticle assembly

被引：4
|
作者：
Liu, Shih-Bin [1 ]
Chen, Chia-Tang [1 ]
Wu, Chun-Ming [1 ]
Wang, Chin-Wei [1 ]
Wang, Chih-Jen [1 ]
Karna, Sunil K. [1 ]
Li, Wen-Hsien [1 ]
机构：
[1] Natl Cent Univ, Dept Phys, Jhongli 32001, Taiwan
来源：
JOURNAL OF APPLIED PHYSICS | 2011年 / 109卷 / 07期
关键词：
TRANSITION-TEMPERATURE; PRESSURE-DEPENDENCE; ALUMINUM FILMS; PARTICLES; ENHANCEMENT;
D O I：
10.1063/1.3564936
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report on the observations of enhanced superconductivity in a very loosely packed 6.8 nm Al nanoparticle assembly and the suppression of superconductivity by interparticle interactions, through ac magnetic susceptibility and magnetization measurements. T-C and H-C of the 6.8 nm Al particles are, respectively, 1.9 and 77 times higher than that of bulk Al. M(H-a) curves taken below and above T-C can all be described by a Langevin profile, showing the existence of a spontaneous magnetic component in superconducting phase. Superconductivity is found to be gradually suppressed by interparticle interactions. (C) 2011 American Institute of Physics. [doi:10.1063/1.3564936]
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页数：3
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