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Local probe characterization of novel electronic phases in 2D transition metal dichalcogenides

AutorUgeda, Miguel M.
Fecha de publicación2017
Citación1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics" (2017)
ResumenThe transition metal dichalcogenides (TMDs) exhibit a rich variety of behavior due to their strong spin-orbit coupling, electron-electron interactions, and electron-phonon coupling. This causes, for example, charge density wave (CDW) ordering, superconductivity, and even Weyl semimetal behavior in different TMD materials. Much recent activity has been focused on understanding how this behavior is modified as materials are thinned from the bulk 3D regime to the single-layer 2D regime. Such dimensional reduction can cause significant changes to band structure, electron screening properties, and structural ground states, leading to new behavior such as the quantum spin Hall effect which was recently predicted for some 2D TMD materials. Here I will first discuss our measurements of single-layer NbSe2. I will describe the behavior of the collective electronic phases in this material as it is thinned to the 2D limit. I will also discuss our recent search for the quantum spin Hall effect in the 1T' phase of single-layer TMD materials such as WSe2 and WTe2.
DescripciónResumen del trabajo presentado al 1st Workshop Spain-Taiwan: "2D Materials and Interfaces for Spintronics", celebrado en Barcelona (España) del 23 al 25 de octubre de 2017.
URIhttp://hdl.handle.net/10261/160619
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