Inducing a many-body topological state of matter through Coulomb-engineered local interactions

M. Rösner, Jose Lado

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

61 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
Artikkeli013265
Sivut1-9
Sivumäärä9
JulkaisuPHYSICAL REVIEW RESEARCH
Vuosikerta3
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 19 maalisk. 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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