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物理学报. 2004, 53(4): 1191-1194.
doi: 10.7498/aps.53.1191.
高度取向石墨的巨磁电阻效应
- 收稿日期: 2003-06-06
- 修回日期: 2003-07-24
- 刊出日期: 2004-02-05
English Abstract
Huge magnetoresistance effect of highly oriented pyrolytic graphite
- Received Date:
06 June 2003
- Accepted Date:
24 July 2003
- Published Online:
05 February 2004
Abstract: Graphite is a quasi-two-dimensional semimetal. However, for usual graphite the magnetoresistance is not so high due to its small crystal size and no preferred orientation. Huge positive magnetoresistance up to 85300% at 4.2 K and 4950% at 300 K under 8.15 T magnetic field was found in highly oriented pyrolytic graphite. The mechanism of huge positive magnetoresistance is not only due to ordinary magnetoresistance but also due to magnetic-field-driven semimetal-insulator transition.
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Keywords:
- magnetoresistance /
- graphite
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