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Title: | Effect of Lattice Misfit on the Stability of the Misfit Layer Compound (SnS)1+xNbS2 |
Authors: | Fang, C |
Keywords: | misfit layer compound;commensurate approximation;misfit and stability;interlayer interactions;first principles;density functional theory |
Issue Date: | 26-Aug-2024 |
Publisher: | MDPI |
Citation: | Fang, C. (2024) 'Effect of Lattice Misfit on the Stability of the Misfit Layer Compound (SnS)1+xNbS2', Crystals, 14 (9), 756, pp. 1 - 13. doi: 10.3390/cryst14090756. |
Abstract: | The prototype misfit layer compound (SnS)1.17NbS2 consists alternatingly of a metallic triatomic NbS2 layer, in which Nb atoms are sandwiched by S atoms, and an insulating SnS double layer featuring a NaCl-type structure. Here we investigate the effect of lattice misfit on the stability and chemical bonding in the misfit layer compound using a first-principles density functional theory approach. The calculations show that for the (SnS)1+xNbS2 approximants, the most stable one has x = 0.167, close to the experimental observations. Charge analysis finds a moderate charge transfer from SnS to NbS2. Sn or S vacancies in the SnS part affect the electronic properties and interlayer interactions. The obtained information here helps in understanding the mechanism of formation and stability of misfit layer compounds and ferecrystals and further contributes to the design of novel multilayer compounds and emerging van der Waals heterostructures. |
Description: | Data Availability Statement: The original contributions presented in the study are included in the article/Supplementary Materials (https://www.mdpi.com/2073-4352/14/9/756#app1-crystals-14-00756), further inquiries can be directed to the corresponding author/s. |
URI: | https://bura.brunel.ac.uk/handle/2438/29610 |
DOI: | https://doi.org/10.3390/cryst14090756 |
Other Identifiers: | ORCiD: Changming Fang https://orcid.org/0000-0003-0915-7453 756 |
Appears in Collections: | Brunel Centre for Advanced Solidification Technology (BCAST) |
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