Metal-insulator transition and the anomalous Hall effect in the layered magnetic materials VS2 and VSe2

Fuh HR, Yan B, Wu SC, Felser C, Chang CR (2016)

Publication Type: Journal article

Publication year: 2016

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Book Volume: 18

Article Number: 113038

Journal Issue: 11

DOI: 10.1088/1367-2630/18/11/113038

Abstract

We investigated the electronic structure of the layered transition-metal dichalcogenides VS2 and VSe2 by first-principles calculations. Both compounds exhibit metal-insulator transitions when crossing over from the bulk to the two-dimensional monolayer. In the monolayer limit, the Coulomb interaction is enhanced due to the dimension reduction, leading to the insulating state. Moreover, these monolayers are found to be ferromagnetic, supplying excellent candidates for ferromagnetic insulators. When increasing the thickness, the few-layer structure turns metallic and presents large anomalous Hall conductivity (∼100 S/cm), which oscillates with respect to the thickness due to the size effect. Our findings presents profound materials, such as ferromagnetic insulators and anomalous Hall ferromagnets, for the spintronic application.

Involved external institutions

National Taiwan University (NTU)

Taiwan (TW) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids

Germany (DE)

How to cite

APA:

Fuh, H.-R., Yan, B., Wu, S.-C., Felser, C., & Chang, C.-R. (2016). Metal-insulator transition and the anomalous Hall effect in the layered magnetic materials VS2 and VSe2. New Journal of Physics, 18(11). https://doi.org/10.1088/1367-2630/18/11/113038

MLA:

Fuh, Huei-Ru, et al. "Metal-insulator transition and the anomalous Hall effect in the layered magnetic materials VS2 and VSe2." New Journal of Physics 18.11 (2016).

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