Dynamical Chiral Nernst Effect in Twisted Van der Waals Few Layers
arXiv:2401.13278 · doi:10.1007/s44214-024-00059-z
Abstract
The Nernst effect is a fundamental thermoelectric conversion phenomenon that was deemed to be possible only in systems with magnetic field or magnetization. In this work, we propose a novel dynamical chiral Nernst effect that can appear in two-dimensional van der Waals materials with chiral structural symmetry in the absence of any magnetic degree of freedom. This unconventional effect is triggered by time variation of an out-of-plane electric field, and has an intrinsic quantum geometric origin linked to not only the intralayer center-of-mass motion but also the interlayer coherence of electronic states. We demonstrate the effect in twisted homobilayer and homotrilayer transition metal dichalcogenides, where the strong twisted interlayer coupling leads to sizable intrinsic Nernst conductivities well within the experimental capacity. This work suggests a new route for electric control of thermoelectric conversion.
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Cited by in corpus (6)
- Planar Hall Effect in Quasi-Two-Dimensional Materials
- Twistronics and moiré superlattice physics in 2D transition metal dichalcogenides
- Chiral excitonic systems in twisted bilayers from Förster coupling and unconventional excitonic Hall effects
- Topological domain-wall states from Umklapp scattering in twisted bilayer graphene
- Interlayer electric multipole Hall effect in twisted multilayers
- Quantum geometric map of magnetotransport