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1 PublicationDislocation-free two-dimensional concentric lateral heterostructures: MoS₂-TaS₂/Au(111)
Mehlich, K.; Ghorbani Asl, M.; Sahm, D.; Chagas, T.; Weber, D.; Grover, C.; Dombrowski, D.; Krasheninnikov, A.; Busse, C.
Abstract
We prepared two-dimensional concentric lateral heterostructures of the monolayer transition metal dichalcogenides (TMDCs) MoS₂ and TaS₂ by reactive molecular beam epitaxy (MBE) on chemically inert and weakly interacting Au(111). The heterostructures are in a size regime where quantum confinement can be expected. Despite large lattice mismatch a seamless interconnection of the two materials has been achieved, confirming that the semiconducting core is fully enclosed by a metallic border around its circumference. The resulting strain is analyzed on the atomic scale using scanning tunneling microscopy (STM), corroborated by calculations based on empirical potentials and compared to results from finite elements simulations.
Keywords: two-dimensional materials; lateral heterostructures; scanning tunneling microscopy; atomistic simulations; molecular beam epitaxy
Involved research facilities
- Ion Beam Center DOI: 10.17815/jlsrf-3-159
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DOI: 10.1088/2053-1583/ad5737
Permalink: https://www.hzdr.de/publications/Publ-39172
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