English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Here, we present a detailed study on the temperature and angular dependenceof the Shubnikov-de-Haas (SdH) effect in the semi-metal WTe$_2$. This compoundwas recently shown to display a very large non-saturating magnetoresistancewhich was attributed to nearly perfectly compensated densities of electrons andholes. We observe four fundamental SdH frequencies and attribute them tospin-orbit split, electron- and hole-like, Fermi surface (FS) cross-sectionalareas. Their angular dependence seems consistent with ellipsoidal FSs withvolumes suggesting a modest excess in the density of electrons with respect tothat of the holes. We show that density functional theory (DFT) calculationsfail to correctly describe the FSs of WTe$_2$. When their cross-sectional areasare adjusted to reflect the experimental data, the resulting volumes of theelectron/hole FSs obtained from the DFT calculations would imply a pronouncedimbalance between the densities of electrons and holes. We find evidence forfield-dependent Fermi surface cross-sectional areas by fitting the oscillatorycomponent superimposed onto the magnetoresistivity signal to severalLifshitz-Kosevich components. We also observe a pronounced field-inducedrenormalization of the effective masses. Taken together, our observationssuggest that the electronic structure of WTe$_2$ evolves with the magneticfield. This evolution might be a factor contributing to its pronouncedmagnetoresistivity.

Role of spin-orbit coupling and evolution of the electronic structure of WTe$_2$ under an external magnetic field