楔形金薄膜系统中的反常跳跃电导和隧道效应  

Anomalous hopping and tunneling effects on the conductivity of a wedge-shaped Au film system

作　　者：陶向明[1] 夏阿根[1] 叶高翔[1] 

机构地区：[1]浙江大学物理系,杭州310027

出　　处：《物理学报》2004年第1期239-243,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 2 0 40 18和 10 1740 63 )资助的课题~~

摘　　要：采用真空蒸镀方法 ,利用液体衬底在沉积过程中的线性扩散过程 ,在玻璃表面制备出斜率仅为 10 - 5的楔形金薄膜逾渗系统 ,并用四引线方法测量了从该薄膜系统中得到的均匀无序金薄膜的导电特性 .实验结果表明 :和通常的平整薄膜逾渗系统相比 ,该薄膜系统呈现更为强烈的跳跃电导和隧道效应 .A gold thin film percolation system, deposited on glass surfaces by the vapor deposition method, has been fabricated. By using the expansive and movable properties of silicone oil drop, a characteristic wedge - shaped film system with a slope of ～ 10 -5 naturally forms during deposition. The electrical conductivity of the band-like gold film, i.e. , the uniform part with a fixed thickness, is measured with the four-probe method. It is found that hopping and tunneling effects of the films are stronger than those of the other films.

关 键 词：楔形金薄膜系统 反常跳跃电导 隧道效应 真空蒸镀法 线性扩散过程 薄膜物理 逾渗系统 

分 类 号：O484.4[理学—固体物理]