Remarkable room-temperature magnetoresistance in silicon strip devices

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• 作者：Hui Guo ; Lei Cui ; Yali Li ; Qiang Chen ; Xiaolong Fan ; Fangcong Wang and Junshuai Li
• 刊名：physica status solidi (RRL) - Rapid Research Letters
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：11
• 期：1
• 全文大小：389K
• ISSN：1862-6270

文摘

In this paper, we report remarkable room-temperature magnetoresistance (MR) in silicon strip devices. Saturating and non-saturating MRs can be realized based on the measuring configurations with one top contact and ten top contacts, respectively. Using the one-top-contact measurement, a saturating MR ratio of ∼400% is obtained at an applied voltage of only 1.0 V when the magnetic field is larger than 0.8 T. While the non-saturating MR is achieved in the ten-top-contact measurement and the MR ratio is only ∼155% for the 1.0 V applied voltage even under the magnetic field of 1.2 T. The differences for MR ratio values and change trends in these two measuring configurations are attributed to the enhanced Hall electric field with the increase of the top contact number.