The effects of current-path patterns on magnetotransport in spatially-confined structures by Monte Carlo simulation

作     者：伍建春 孙华 李振亚 

作者机构：Department of Physics and Jiangsu Key Laboratory of Thin FilmsSoochow University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2009年第18卷第11期

页      面：5061-5065页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant Nos 10774107, 10874126 and 10804080) the Doctoral Program of High Education of China (Grant No 20060285003) 

主　　题：magnetoresistance percolation magnetotransport network 

摘      要：Simulations are performed on clusters of finite size to study the effects of size and current-path structure on magnetotransport in spatially-confined samples. Magnetotransport networks are established and calculated based on fractal structures including Koch curves and percolation backbones extracted from regular lattices. The structure pattern of clusters is shown to play an important role in the magnetotransport behaviours by affecting the magnetore- sistance fluctuations due to spin disorder in the systems of small size, which suggests the possibility of controlling the magnetotransport by the design of current-path configurations.