Bulletin of the American Physical Society
APS March Meeting 2023
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session M32: Metal Films and Interfaces
8:00 AM–11:00 AM,
Wednesday, March 8, 2023
Room: Room 224
Sponsoring
Unit:
DCMP
Chair: SATYANARAYANA KACHIRAJU, University of Texas Rio Grande Valley
Abstract: M32.00007 : VSi2 Nanoclusters and Nanoribbons*
9:12 AM–9:24 AM
Presenter:
Valent Oldenkotte
(University of Twente)
Authors:
Valent Oldenkotte
(University of Twente)
Stefan Vries
(University of Twente)
Kai Sotthewes
(University of Twente)
Marko Sturm
(University of Twente)
Marcelo Ackermann
(University of Twente)
Harold Zandvliet
(University of Twente)
Collaboration:
MESA+, Physics of Interfaces and Nanomaterials, Industrial Focus Group XUV Optics
At V coverages much larger than 1 monolayer (ML), we found that VSi2 prefers to grow into 3 types of islands: hexagonal flat clusters, pyramidal hut clusters, and faceted hut clusters. All of which have low aspect ratios. At V coverages around 1 ML, however, we found that VSi2 forms elongated nanoclusters with high aspect ratios and arrays of nanoribbons. In this presentation, we will explore: (1) the role of strain in the growth of these structures; (2) an STM methodology we developed to simultaneously map the topography, work function, and LDOS; and (3) the electronic structure of VSi2 nanoribbons.
*This work is part of the research program 'X-Tools: A thin-film physics toolbox for XUV optics', funded by the Dutch Research Council (NWO), with co-funding by ASML, Zeiss SMT, and Malvern Panalytical (NWO ref. 741.018.301).
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