Abstract
Since the successful exfoliation of graphene from graphite in 2004, research on two-dimensional crystals has attracted significant attention. An increasing number of new two-dimensional materials have been synthesized, ranging from graphene-like crystals such as hexagonal boron nitride (h-BN) and germanene, to three-atom-thick transition-metal dichalcogenides, and to layered oxides and hydroxides. A wide spectrum of electronic and magnetic properties of great interest have been discovered in these new two-dimensional materials. In this chapter, we review the history and current status of research on group IVA two-dimensional crystals, i. e., graphene, silicene, germanene, and stanene. We give an overall summary of the syntheses of these two-dimensional crystals, especially epitaxial growth in an ultrahigh-vacuum environment. We hope that the knowledge gained from the reviewed systems will guide the design and synthesis of other two-dimensional crystals.
In this chapter, we give a brief review on the epitaxial growth of group IVA two-dimensional (2-D) monolayers on transition-metal substrates in ultrahigh-vacuum (UHV) environments. In Sect. 9.1, we discuss the epitaxial growth of graphene on a Ru(0001) and other transition-metal substrates. In Sects. 9.2 and 9.3, we review the synthesis of silicene and germanene. Stanene and several other monolayers made with metallic elements are discussed in Sect. 9.4.
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Zhang, YY., Pan, J., Du, S., Gao, HJ. (2020). Two-Dimensional Crystals: Graphene, Silicene, Germanene, and Stanene. In: Rocca, M., Rahman, T.S., Vattuone, L. (eds) Springer Handbook of Surface Science. Springer Handbooks. Springer, Cham. https://doi.org/10.1007/978-3-030-46906-1_9
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