扭曲的石墨烯展示出未曾见过的磁力形式

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tassy 2019-07-27 00:11

扭曲的双层石墨烯产生的磁场

lufan 2019-07-27 00:45

我喜欢石墨！！！！！！

刘明欢聪慧 2019-07-27 04:11

扭曲的石墨烯展示出未曾见过的磁力形式

俞佳诚 2019-07-27 04:40

石墨烯是一种排列在晶格中的碳原子薄片，虽然它非常简单，但它的新特性却让科学家们着实吃惊了一把。来自斯坦福大学的一个研究小组最近取得了一系列的突破，他们发现石墨烯可以在特定方式的排列下产生磁场。以前，这种特殊形式的磁力只是理论化的东西。 +r]zs
^'  

mang2004 2019-07-27 05:04

Emergent ferromagnetism near three-quarters filling in twisted bilayer grapheme ?A?F.n`  
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Abstract [Wi1|]X"G  
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When two sheets of graphene are stacked at a small twist angle, the resulting flat superlattice minibands are expected to strongly enhance electron-electron interactions. Here we present evidence that near three-quarters (3/4) filling of the conduction miniband these enhanced interactions drive the twisted bilayer graphene into a ferromagnetic state. In a narrow density range around an apparent insulating state at 3/4, we observe emergent ferromagnetic hysteresis, with a giant anomalous Hall (AH) effect as large as 10.4 kΩ and indications of chiral edge states. Surprisingly, the magnetization of the sample can be reversed by applying a small DC current. Although the AH resistance is not quantized and dissipation is significant, our measurements suggest that the system may be an incipient Chern insulator. tF7hFL5f  
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dushunli 2019-07-27 07:29

石墨烯的力量！

谭健 2019-07-27 08:11

石墨烯是一种排列在晶格中的碳原子薄片

liufeng0911 2019-07-27 08:41

石墨烯

stoutman 2019-07-27 08:42

扭曲的双层石墨烯产生的磁场非常微弱--大概是普通冰箱磁铁的100万倍--但这可能对某些应用有用。

tomryo 2019-07-27 08:50

扭曲的石墨烯展示出未曾见过的磁力形式