Hexagonal Warping Induced Nonlinear Planar Nernst Effect in Nonmagnetic Topological Insulators

Abstract

We propose theoretically a new effect, i.e. nonlinear planar Nernst effect (NPNE), in nonmagnetic topological insulator (TI) Bi2Te3 in the presence of an in-plane magnetic field. We find that the Nernst current scales quadratically with temperature gradient but linearly with magnetic field and exhibits a cosine dependence of the orientation of the magnetic field with respect to the direction of the temperature gradient. The NPNE has a quantum origin arising from the conversion of a nonlinear transverse spin current to a charge current due to a joint result of hexagonal warping effect, spin-momentum locking, and the time-reversal symmetry breaking induced by the magnetic field.

11 pages,7 figures

References in corpus (30)

• Topological Insulators
• Topological insulators and superconductors
• Antiferromagnetic spintronics
• Spin Caloritronics
• Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
• Model Hamiltonian for Topological Insulators
• Hexagonal Warping Effects in the Surface States of Topological Insulator Bi${}_2$Te${}_3$
• Room-temperature perpendicular magnetization switching through giant spin-orbit torque from sputtered BixSe(1-x) topological insulator material
• Room temperature spin-orbit torque switching induced by a topological insulator
• Unidirectional spin Hall magnetoresistance in ferromagnet/normal metal bilayers
• Room temperature magnetization switching in topological insulator-ferromagnet heterostructures by spin-orbit torques
• Manifestation of Topological Protection in Transport Properties of Epitaxial Bi2Se3 Thin Films
• Large Unidirectional Magnetoresistance in a Magnetic Topological Insulator
• Surface state dominated spin-charge current conversion in topological insulator/ferromagnetic insulator heterostructures
• Planar Hall effect from the surface of topological insulators
• Bilinear magneto-electric resistance as a probe of three-dimensional spin texture in topological surface states
• Room Temperature Electrical Detection of Spin Polarized Currents in Topological Insulators
• Large anomalous Nernst effect in a van der Waals ferromagnet Fe${}_3$GeTe${}_2$
• Nonlinear planar Hall effect
• Enhanced spin Seebeck effect signal due to spin-momentum locked topological surface states
• Magnetoresistance of heavy and light metal/ferromagnet bilayers
• Thermally driven pure spin and valley current via anomalous Nernst effect in monolayer group-VI dichalcogenides
• Current induced anisotropic magnetoresistance in topological insulator films
• Anisotropic and strong negative magneto-resistance in the three-dimensional topological insulator Bi2Se3
• Topological Nonlinear Anomalous Nersnt Effect in Strained Transition Metal Dichalcogenides
• Theory of bi-linear magnetoresistance within the minimal model for surface states in topological insulators
• Non-linear Nernst effect in bilayer WTe${}_2$
• Exchange magnon induced resistance asymmetry in permalloy spin-Hall oscillators
• Unconventional Planar Hall Effect in Exchange-Coupled Topological Insulator-Ferromagnetic Insulator Heterostructures
• Unidirectional Seebeck effect in magnetic topological insulators

Cited by in corpus (4)

• Systematic analysis method for nonlinear response tensors
• Magnetic warping in topological insulators
• Band tilt induced nonlinear Nernst effect in topological insulators: An efficient generation of high-performance spin polarization
• Unidirectional Seebeck effect from Rashba spin-orbit coupling on the subsurface of Ge(111)