Year: 2025
Type: article
Abstract: High Resolution Image Download MS PowerPoint Slide Janus SeMoS monolayers (MLs) are synthetic 2D materials with unique electronic properties, as theory predicts, but their experimental exploration has been hindered by the low quality of the samples. Here we report a synthesis of high-quality Janus MLs on gold substrates by thermal exchange reaction taking place at the ML/Au(111) interface. The synthesized Janus SeMoS MLs were characterized by complementary techniques, and insights into the topography and electronic properties of the system were obtained. Specifically, due to the lattice mismatch with the Au(111), a moiré pattern with a periodicity of 2.9 nm was observed. A precise experimental determination of the lattice constant of Janus SeMoS of 3.22 ± 0.01 Å was obtained, and the measured spin–orbit splitting at the K point of the valence band was found to be 170 ± 15 meV, matching well the results of the density functional theory calculations.
Source: Nano Letters
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $4,500
Awards: G1398146393, SFB 1375: Nichtlineare Optik bis hin zu atomaren Skalen, G1957822890, Präparationskammer (MVD/PVD) mit XPS/UPS, STM/AFM und LEED, SFB 1415: Chemie der synthetischen zweidimensionalen Materialien, G2788606630, G3573082562, G3853112101, G390482800, G4344090363, Untersuchung der Rolle von intrinsischen Defekten für optische und optoelektronische Eigenschaften von ÜbergangsmetallDichalkogenidMonolagen und lateralen Heterostrukturen, die durch maßgeschneiderte Synthese hergestellt wurden, G5586034938, Dipolare Exzitonen und Kopplung zwischen Monolagen: Optik, Dynamik und Transport in JanusTMDHeterostrukturen, G7213200109
OpenAlex ID: W4407673760