2-7 June 2019
Simon Fraser University
America/Vancouver timezone
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Imaging the In-Plane Anisotropy and Lattice Defects of ReS2 Using Scanning Tunneling Microscopy

Jun 5, 2019, 1:45 PM
SCP 8445.2 (Simon Fraser University)

SCP 8445.2

Simon Fraser University

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) W2-6 Local probes (DCMMP) | Sondes locales (DPMCM)


Mr Ryan Plumadore (University of Ottawa)


Among the layered transition metal dichalcogenides, the compounds that exhibit in-plane anisotropy are of particular interest as they offer an additional tuning knob for their novel properties. In this talk we focus on studying the nanoscale lattice structure of semiconducting ReS2 by using an ultrahigh vacuum, room temperature scanning tunneling microscope. We demonstrate that rhenium atoms form diamond-shaped clusters, organized in disjointed chains. We employ scanning tunneling spectroscopy to measure the bandgap and positions of the valence and conduction bands. We further characterize the structure and properties of lattice defects in the anisotropic planes of ReS2 by exploring their influence on the local electrostatic environment.

Primary authors

Mr Ryan Plumadore (University of Ottawa) Justin Boddison-Chouinard (University of Ottawa) Florence Grenapin (University of Ottawa) Ahmed Rezk (University of Ottawa) Dr Gregory Lopinski (National Research Council of Canada) Prof. Adina Luican-Mayer (University of Ottawa)

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