Quantum simulator to emulate lower-dimensional molecular structure

• 成果类型: Article
• 署名作者: Sierda, E.; Huang, X.; Badrtdinov, D. I.; Kiraly, B.; Knol, E. J.; Groenenboom, G. C.; Katsnelson, M. I.; Rosner, M.; Wegner, D.; Khajetoorians, A. A.
• 署名单位: Radboud University Nijmegen
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10057
• DOI: 10.1126/science.adf2685
• 发表日期: 2023-06-08
• 页码: 1048-1052
• 关键词: dirac fermions; semiconductors; electrons; corrals; triplet; state

摘要

Bottom-up quantum simulators have been developed to quantify the role of various interactions, dimensionality, and structure in creating electronic states of matter. Here, we demonstrated a solid-state quantum simulator emulating molecular orbitals, based solely on positioning individual cesium atoms on an indium antimonide surface. Using scanning tunneling microscopy and spectroscopy, combined with ab initio calculations, we showed that artificial atoms could be made from localized states created from patterned cesium rings. These artificial atoms served as building blocks to realize artificial molecular structures with different orbital symmetries. These corresponding molecular orbitals allowed us to simulate two-dimensional structures reminiscent of well-known organic molecules. This platform could further be used to monitor the interplay between atomic structures and the resulting molecular orbital landscape with submolecular precision.