Stacking Order in Graphite Films Controlled by van der Waals Technology

• DOI: 10.1021/acs.nanolett.9b03014
• Publication Date: 2019-10-30T20:55:21Z
• Authors: Yaping Yang; Yi-Chao Zou; Colin R. Woods; Yanmeng Shi; Jun Yin; Shuigang Xu; Servet Ozdemir; Takashi Taniguchi; Kenji Watanabe; Andre K. Geim; Kostya S. Novoselov; Sarah J. Haigh; Artem Mishchenko
• Keywords: Condensed Matter - Mesoscale and Nanoscale Physics; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); FOS: Physical sciences; rhombohedral graphite; 02 engineering and technology; Stacking order; 0210 nano-technology; domains; van der Waals assembly; zigzag

In graphite crystals, layers of graphene reside in three equivalent, but distinct, stacking positions typically referred to as A, B, and C projections. The order which the are stacked defines electronic structure crystal, providing an exciting degree freedom can be exploited for designing graphitic materials with unusual properties including predicted high-temperature superconductivity ferromagnetism. However, lack control sequence limits most research stable ABA form graphite. Here we demonstrate a strategy using van der Waals technology. To this end, first visualise distribution domains films then perform directional encapsulation ABC-rich crystallites hexagonal boron nitride (hBN). We found that hBN-encapsulation is introduced parallel zigzag edges preserves ABC stacking, while along armchair transforms ABA. technique presented here should facilitate new on important