ICTS:29185

Video URL

Planar Hall Effect in Quasi Two-Dimensional Materials

Planar Hall Effect in Quasi Two-Dimensional Materials

(2024). Planar Hall Effect in Quasi Two-Dimensional Materials. SciVideos. https://youtube.com/live/nQCIrJ7F6zs

Planar Hall Effect in Quasi Two-Dimensional Materials. SciVideos, Jul. 26, 2024, https://youtube.com/live/nQCIrJ7F6zs 

          @misc{ scivideos_ICTS:29185,
            doi = {},
            url = {https://youtube.com/live/nQCIrJ7F6zs},
            author = {},
            keywords = {},
            language = {en},
            title = {Planar Hall Effect in Quasi Two-Dimensional Materials},
            publisher = {},
            year = {2024},
            month = {jul},
            note = {ICTS:29185 see, \url{https://scivideos.org/icts-tifr/29185}}
          }
Amit Agarwal
Talk numberICTS:29185
Source RepositoryICTS-TIFR
Source EventEngineered 2D Quantum Materials
Collection

Abstract

The planar Hall effect in 3D systems is an effective probe for their Berry curvature, topology, and electronic properties. However, the Berry curvature-induced conventional planar Hall effect is forbidden in 2D systems as the out-of-plane Berry curvature cannot couple to the band velocity of the electrons moving in the 2D plane. Here, we demonstrate a unique 2D planar Hall effect (2DPHE) originating from the hidden planar components of the Berry curvature and orbital magnetic moment in quasi-2D materials. We identify all planar band geometric contributions to 2DPHE and classify their crystalline symmetry restrictions. Using gated bilayer graphene as an example, we show that in addition to capturing the hidden band geometric effects, 2DPHE is also sensitive to the Lifshitz transitions. 

Reference: arXiv 2405.00379 (2024)