Sign-flipping intrinsic anomalous Hall conductivity with Berry curvature tunability in a half-metallic ferromagnet NbSe-VSe lateral heterostructure.

Single-layer half-metal magnets offer exciting scope in spin electronic quantum applications owing to improved spin transport, reduced interfacial resistance and streamlined device fabrication. Herein, we report the emergence of sign-flipping intrinsic anomalous Hall conductivity (AHC) as a result of changes in Berry curvature under an external electric field and half metallicity in a lateral heterostructure composed of centrosymmetric metallic monolayers 1T-NbSe and 1T-VSe. The metallic monolayers 1T-NbSe and 1T-VSe laterally interfaced along the zigzag orientation break inversion symmetry at the interface and result in distinctive Berry curvature features.

Nontrivial band topology coupled thermoelectrics in VSe/MoSevan der Waals magnetic Weyl semimetal.

The correlation between topological and thermoelectrics promotes numerous interesting electronic phenomena and sets the stage for efficient thermopower devices. Herein, we report nontrivial band topology of 1T-VSe/1H-MoSevan der Waals system and also probe its thermoelectric (TE) characteristics on the basis of first-principle calculations. The crossover of bands, which creates a close loop near Fermi level along M-K high symmetry points, gets inverted at former crossing points of bands, under spin-orbit coupling effect.