Inducing a many-body topological state of matter through Coulomb-engineered local interactions
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2021-03-19
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en
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9
1-9
1-9
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PHYSICAL REVIEW RESEARCH, Volume 3, issue 1
Abstract
The engineering of artificial systems hosting topological excitations is at the heart of current condensed matter research. Most of these efforts focus on single-particle properties, neglecting possible engineering routes via the modifications of the fundamental many-body interactions. Interestingly, recent experimental breakthroughs have shown that Coulomb interactions can be efficiently controlled by substrate screening engineering. Inspired by this success, we propose a simple platform in which topologically nontrivial many-body excitations emerge solely from dielectrically engineered Coulomb interactions in an otherwise topologically trivial single-particle band structure. Furthermore, by performing a realistic microscopic modeling of screening engineering, we demonstrate how our proposal can be realized in one-dimensional systems such as quantum-dot chains. Our results put forward Coulomb engineering as a powerful tool to create topological excitations, with potential applications in a variety of solid-state platforms.Description
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Rösner, M & Lado, J 2021, ' Inducing a many-body topological state of matter through Coulomb-engineered local interactions ', PHYSICAL REVIEW RESEARCH, vol. 3, no. 1, 013265, pp. 1-9 . https://doi.org/10.1103/PhysRevResearch.3.013265