arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.5838cond-mat.mes-hall
收藏

控制腐蚀法制备亚15nm铝丝

Fabrication of sub-15nm aluminum wires by controlled etching

T. Morgan-Wall, H. J. Hughes, N. Hartman, T. M. McQueen, N. Markovic

摘要:

我们描述了一种制备直径小于15 nm的均匀铝纳米线的方法。电子束光刻用于定义窄线,然后使用碳酸氢钠溶液蚀刻,同时原位测量其电阻。当达到期望的电阻时,可以停止蚀刻过程,并且可以在稍后的时间重新开始。所得到的纳米线显示出超导转变作为温度和磁场的函数,这与它们的直径一致。过渡的宽度与光刻限定的线的宽度相似,表明蚀刻过程是均匀的并且线未被损坏。这种技术允许精确控制正常状态电阻,并可用于创建各种铝纳米器件。

英文摘要:

We describe a method for fabrication of uniform aluminum nanowires with diameters below 15 nm. Electron beam lithography is used to define narrow wires, which are then etched using a sodium bicarbonate solution, while their resistance is simultaneously measured in-situ. The etching process can be stopped when the desired resistance is reached, and can be restarted at a later time. The resulting nanowires show a superconducting transition as a function of temperature and magnetic field that is consistent with their diameter. The width of the transition is similar to that of the lithographically defined wires, indicating that the etching process is uniform and that the wires are undamaged. This technique allows for precise control over the normal state resistance and can be used to create a variety of aluminum nanodevices.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑