Fabrication of folded bilayer-bilayer graphene/hexagonal boron nitride superlattices
Fabrication of folded bilayer-bilayer graphene/hexagonal boron nitride superlattices
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DOI：
10.35848/1882-0786/ab790d
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发表时间：
2020-03
影响因子：
2.3
通讯作者：
T. Iwasaki;Y. Morita;S. Nakaharai;Y. Wakayama;E. Watanabe;D. Tsuya;Kenji Watanabe;T. Taniguchi;S. Moriyama
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作者：
T. Iwasaki;Y. Morita;S. Nakaharai;Y. Wakayama;E. Watanabe;D. Tsuya;Kenji Watanabe;T. Taniguchi;S. Moriyama
碳基超晶格是一类极具发展前景的新型量子超材料。在这里，我们展示了折叠双层-双层石墨烯(fBBLG)/六方氮化硼（hBN）超晶格的首次制造。在低温输运特性中，由于fBBLG和hBN的晶体学角度排列，观察到卫星峰。特殊的电阻峰出现在远离电荷中性点和hbn诱导卫星的地方，这可能是可能的竞争顺序的标志。我们的研究结果表明，在fBBLG中出现了一种独特的电子带结构，为通过使用超晶格结构进行能带工程来研究相关电子现象提供了一种方法。
Carbon-based superlattices represent a novel class of quantum metamaterials having promising prospects. Here, we show the first fabrication of folded bilayer-bilayer graphene (fBBLG)/hexagonal boron nitride (hBN) superlattices. In the transport properties at low temperatures, satellite peaks are observed due to the crystallographic angle alignment of fBBLG and hBN. The peculiar resistance peaks appear away from the charge neutrality point and the hBN-induced satellites, which may be signatures of possible competing orders. Our results suggest the emergence of a unique electronic band-structure in the fBBLG, providing a way for investigating the correlated electron phenomena by performing energy-band engineering with superlattice structures.