REVIEW 6 cited by
Observation of giant nonlinear Hall conductivity in Bernal bilayer graphene
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
read the original abstract
In a system of two-dimensional electrons, a combination of broken symmetry, interactions, and nontrivial topology can conspire to give rise to a nonlinear transport regime, where electric current density scales as the square of electric field. This regime has become a venue for exciting discoveries such as the nonlinear Hall effect and diode-like nonreciprocal transport. However, interpretation of experimental data is challenging in the nonlinear regime as DC transport is described by a rank-3 conductivity tensor with 6 free parameters. Here, we resolve this challenge by analytically solving for the nonlinear potential distribution across the disk sample for an arbitrary linear and nonlinear conductivity tensors. This allows us to unambiguously extract all components of the nonlinear tensor from experimental measurement. Using this novel tool, we identify giant nonlinear Hall effect in Bernal bilayer graphene. Our methodology provides the first systematic framework for interpreting nonlinear transport and uncovers a new route towards understanding quasi-2D materials.
Forward citations
Cited by 6 Pith papers
-
Inter-band coherence effects in disordered crystals: beyond the non-crossing approximation
Extends density-matrix kinetic theory beyond non-crossing approximation to fourth-order disorder, yielding extrinsic tau^0 contributions to anomalous Hall conductivity in the 2D Dirac model.
-
Modulation of quantum geometry and its coupling to pseudo-electric field by dynamic strain
Oscillatory strain modulates the Berry curvature dipole and produces a pseudo-electric field in bilayer graphene stacks, detected as Hall voltages at mixed strain and current frequencies.
-
Sliding-tuned Quantum Geometry in Moir\'e Systems: Nonlinear Hall Effect and Quantum Metric Control
Interlayer sliding in multi-twist moiré systems acts as a tuning knob for Berry curvature and quantum metric, enabling a sliding-driven nonlinear Hall effect and quantum-metric control for testing fractional Chern ins...
-
Giant nonlinear conductivity in 2D electron gas from substrate-induced dipolar scattering
Substrate-induced periodic dipolar scattering in 2D electron gases produces singular enhancement of nonlinear conductivity to a natural scale of 1 μm/ΩV due to strict 2D kinematic constraints.
-
Weak localization and antilocalization corrections to nonlinear transport: a semiclassical Boltzmann treatment
Antilocalization corrections to the Boltzmann distribution can reverse the sign of the quadratic conductivity in a trigonally-warped single-valley model (at α(0) = −5/(11τ)), while localization-branch sign changes req...
-
Nonlinear thermal and thermoelectric transport from quantum geometry
Nonlinear thermal and thermoelectric responses are shown to encode quantum geometry and satisfy relations parallel to the Wiedemann-Franz and Mott laws in systems with broken symmetries.
Discussion (0). Sign in to comment.