Strain Engineering of Bilayer Graphene with Spatially Corrugated Domain
Sheng Chin Ho1*, Yu Chiang Heish1, Thi Hai Yen Vu1, Shun Tsung Lo1, Tse Ming Chen1
1Department of physics, National Cheng Kung University, Tainan, Taiwan
* Presenter:Sheng Chin Ho,
Nanostructural engineering paves an crucial route to realize artificial band structures, superlattices and spectrums [1,2,3]. Graphene, which is one of the attractive materials, can be modified by spatial deformation inducing a strain gauge field, leading to open a novel topic “straintronics” [4]. Here, we locally engineer the bilayer graphene as a corrugation pattern. For the transport measurement, we simultaneously investigate the flat and corrugated region in the same bilayer graphene device. With applying in-plane magnetic field, the unconventional negative magnetoresistance(MR) have been observed only in corrugated region. Besides, the temperature suppresses such negative MR evolving to general positive trend.

1. C. Forsythe, et al. arXiv 1710.01365 (2017).
2. C. R. Dean, et al. Nature 497, 598 (2013).
3. Y. Zhang, et al. arXiv 1703.05689 (2017).
4. B. Amorim, et al. Phys. Rep. 617, 1 (2016).

Keywords: strain graphene