The measured positive and negative magnetoresistance for n-type germanium at room temperature
The measured positive and negative magnetoresistance for n-type germanium at room temperature
复制标题
室温下n型锗的正负磁阻测量
DOI:
10.1088/1361-6463/aa8b97
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发表时间:
2017-10
期刊:
影响因子:
--
通讯作者:
Jifan Hu
中科院分区:
文献类型:
--
作者:
Bin Cheng;Hongwei Qin;Jifan Hu
Magnetoresistance (MR) for n-type germanium wafers by in-line-four-terminal method at room temperature are explored. Conspicuously, the variation of the measured MR as a function of applied current and voltage-terminal separation is observed. With a further increase of applied current, the measured MR initially increases, passes through a peak value at a certain current and then finally decreases. The measured MR increases with an increase of the value of voltage-terminal separation. The most important outcome of this study is the observation of negative MR for the smallest voltage-terminal separation of 2 µm, and the sign change of the measured MR can be achieved by magnetic fields. These interesting results may lead to an alternative approach to future magneto-electronic devices.
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