Saha, S and Narayan, A (2023) Nonlinear Hall effect in Rashba systems with hexagonal warping. In: Journal of Physics Condensed Matter, 35 (48).
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Abstract
Rashba spin-orbit coupled systems are an important class of materials noted for diverse fundamental and applied phenomena. Recently, the emergence of non-linear Hall effect under conditions of time-reversal symmetry has been discovered in materials with broken inversion symmetry. In this work, we study the second- and third-order Hall response in Rashba systems with hexagonal warping. Starting with a low-energy model, we obtain the analytic expressions and discover the unique dipole profile in Rashba systems with hexagonal warping. Furthermore, we extend the analysis using a realistic tight-binding model. Next, we predict the existence of a third-order Hall effect in these systems, and calculate the Berry connection polarizability tensor analytically. We also show how the model parameters affect the third-order conductivity. Our predictions can help in the experimental realization of Berry curvature multipole physics in Rashba materials with hexagonal warping, and provide a new platform for engineering the non-linear Hall effects. © 2023 IOP Publishing Ltd.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Physics Condensed Matter |
| Publisher: | Institute of Physics |
| Additional Information: | The copyright for this article belongs to authors. |
| Keywords: | Crystal symmetry; Spin Hall effect, Berry curvature; Berry curvature dipole; Hexagonal warping; Non linear; Non-linear hall effect; Rashba spin; Rashba spin-orbit; Spin orbits; Third order; Warpings, Fruits, article; berry; conductance; dipole; physics; prediction |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit UG Programme |
| Date Deposited: | 16 Nov 2024 15:25 |
| Last Modified: | 16 Nov 2024 15:25 |
| URI: | http://eprints.iisc.ac.in/id/eprint/85315 |
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