Planar Nernst effect from hidden band geometry in layered two-dimensional materials
arXiv:2504.18885 · doi:10.1103/mqqf-fl4r
Abstract
The Nernst effect is a versatile phenomenon relevant for energy harvesting, magnetic sensing, probing band topology and charge-neutral excitations. The planar Nernst effect (PNE) generates an in-plane voltage transverse to an applied temperature gradient under an in-plane magnetic field. Conventional Berry curvature-induced PNE is absent in two-dimensional (2D) systems, as the out-of-plane Berry curvature does not couple to the in-plane electron velocity. We challenge this notion by demonstrating a distinct planar Nernst effect in quasi-2D materials (2DPNE). We show that the 2DPNE originates from previously overlooked planar components of Berry curvature and orbital magnetic moment, arising from inter-layer tunneling in multilayered 2D systems. We comprehensively analyze the band-geometric origin and crystalline symmetry constraints on 2DPNE responses. We illustrate its experimental feasibility in strained bilayer graphene. Our findings significantly expand the theoretical understanding of planar Nernst effects, providing a clear pathway for next-generation magnetic sensing and energy-harvesting applications.
12 pages, 5 figures
References in corpus (31)
- Berry Phase Effects on Electronic Properties
- Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
- A tight-binding approach to uniaxial strain in graphene
- The electronic properties of bilayer graphene
- Berry phase effect in anomalous thermoelectric transport
- Electronic and optical properties of strained graphene and other strained 2D materials: a review
- Thermoelectric energy harvesting with quantum dots
- The thermopower and Nernst Effect in graphene in a magnetic field
- Strain-induced Evolution of Electronic Band Structures in a Twisted Graphene Bilayer
- Controlling Energy Gap of Bilayer Graphene by Strain
- Berry curvature dipole senses topological transition in a moiré superlattice
- Large anomalous Nernst effect in a van der Waals ferromagnet FeGeTe
- Linear magneto-chiral transport in tilted type-I and type-II Weyl Semimetals
- Anomalous sequence of quantum Hall liquids revealing tunable Lifshitz transition in bilayer graphene
- Berry curvature induced thermopower in type-I and type-II Weyl Semimetals
- Orbital angular momentum of Bloch electrons: equilibrium formulation, magneto-electric phenomena, and the orbital Hall effect
- Intrinsic Hall conductivities induced by the orbital magnetic moment
- Current-induced orbital magnetization in systems without inversion symmetry
- Quantitative separation of the anisotropic magnetothermopower and planar Nernst effect by the rotation of an in-plane thermal gradient
- Transverse thermopower in Dirac and Weyl semimetals
- Anomalous Nernst effect on the nanometer scale: Exploring three-dimensional temperature gradients in magnetic tunnel junctions
- Planar Hall Effect in Quasi-Two-Dimensional Materials
- Gapped nodal planes drive a large topological Nernst effect in a chiral lattice antiferromagnet
- Chern number and orbital magnetization in ribbons, polymers, and layered materials
- Detecting Lifshitz Transitions Using Nonlinear Conductivity in Bilayer Graphene
- Nonlinear electrical transport unveils Fermi surface malleability in a moiré heterostructure
- Electrically tunable and reversible magnetoelectric coupling in strained bilayer graphene
- Vertical transverse transport induced by hidden in-plane Berry curvature in two dimensions
- AC Measurement of the Nernst effect of thin films at low temperatures
- Intrinsic nonlinear Nernst and Seebeck effect
- Anti-screening and nonequilibrium layer electric phases in graphene multilayers