Impact of MoS₂ Monolayers on the Thermoelastic Response of Silicon Heterostructures.

ABSTRACT: Understanding the thermoelastic response of a nanostructure is crucial for the choice of materials and interfaces in electronic devices with improved and tailored transport properties at the nanoscale. Here, we show how the deposition of a MoS₂ monolayer can strongly modify the nanoscale thermoelastic dynamics of silicon substrates close to their interface. We demonstrate this by creating a transient grating with extreme ultraviolet light, using ultrashort free-electron laser pulses, whose ≈84 nm period is comparable to the size of elements typically used in nanodevices, such as electric contacts and nanowires. The thermoelastic response, featuring coherent acoustic waves and incoherent relaxation, is tangibly modified by the presence of monolayer MoS₂. Namely, we obs

SUBMITTER: Soranzio D 

PROVIDER: S-EPMC11249974 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature