【摘要】 采用硅油作基底 ,沉积出具有网状特征结构的逾渗Au薄膜 ,用四引线方法原位测量Au薄膜的电学性能 ,测得其电阻随沉积时间以及凝聚时间的变化规律 ,较好地解释了此类薄膜的生长机制。对Au薄膜R I特性的测量结果表明 :生长在液体基底表面Au薄膜的局域隧道电流和跳跃电导效应比一般薄膜更为强烈 ,其功率谱指数w趋于零 ,该值远小于普通逾渗薄膜系统的相应值更多还原

【Abstract】 Gold films,grown on top of silicone oil by thermal deposition,have been studied.A web shaped characteristic structure is observed.The time dependence of its sheet resistance,measured in situ with the four probe technique,is explained with the mechanism of film growth on oil surface.The results show that the localized tunneling and conductance hopping of the Au film are much pronounced than those of the percolation film with similar structures grown by other techniques.Its close to zero critical exponent, w ,is much lower than that of other percolation films.更多还原