Year: 2020
Type: article
Abstract: ${\mathrm{WTe}}_{2}$ is a multifunctional quantum material exhibiting numerous emergent phases in which tuning of the carrier density plays an important role. Here, we demonstrate two nonmonotonic changes in the electronic structure of ${\mathrm{WTe}}_{2}$ upon in situ electron doping. The first phase transition is interpreted in terms of a shear displacement of the top ${\mathrm{WTe}}_{2}$ layer, which realizes a local crystal structure not normally found in bulk ${\mathrm{WTe}}_{2}$. The second phase transition is associated with stronger interactions between the dopant atoms and the host, both through hybridization and electric field. These results demonstrate that electron doping can drive structural and electronics changes in bulk ${\mathrm{WTe}}_{2}$ with implications for realizing nontrivial band-structure changes in heterointerfaces and devices.
Language: Latvian
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3038425234