Electronic structure of antimonene grown on Sb2Te3 (111) and Bi2Te3 substrates

By T. Lei, Chen Liu, Jiali Zhao, Jinmei Li, Yaping Li, Jiaou Wang, Ruixia Wu, H. Qian, Hui‐Qiong Wang, K. Ibrahim. 2016

144 citations recorded by the source corpus.

We explore the formation of single bilayer Sb(111) ultrathin film (Antimonene) on Bi2Te3 and Sb2Te3 substrates for the first time, which is theoretically predicated to be a robust trivial semiconductor but can be tuned to a 2D TI by reducing the buckling height. From angle-resolved photoemission spectroscopy measurements, the antimonene can be well grown on the two surfaces and shows clear band dispersion. The electronic structure of the antimonene shows similar character on the two surfaces, but due to the interfacial strain effect, the bands of antimonene on Bi2Te3 are flatter than on Sb2Te3, which attributes to Bi2Te3 substrate lattice constants lager than Sb2Te3. At the same time, the charge transfer effect is also observed through core level shift, which influences the band dispersion simultaneously.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/6b88cb4fd904e479e6cc523a3823ed50969e31c3