Abstract 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 magnetoresistance 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.
Received: 28 March 2009
Revised: 20 April 2009
Accepted manuscript online:
PACS:
75.47.-m
(Magnetotransport phenomena; materials for magnetotransport)
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 10774107, 10874126
and 10804080) and the Doctoral Program of High Education of China
(Grant No 20060285003).
Cite this article:
Wu Jian-Chun(伍建春), Sun Hua(孙华), and Li Zhen-Ya(李振亚) The effects of current-path patterns on magnetotransport in spatially-confined structures by Monte Carlo simulation 2009 Chin. Phys. B 18 5061
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
