Tunable moiré materials for probing Berry physics and topology
Berry curvature physics and quantum geometric effects have been instrumental in
advancing topological condensed matter physics in recent decades. Although Landau level …
advancing topological condensed matter physics in recent decades. Although Landau level …
Intrinsic nonlinear conductivities induced by the quantum metric
Three mechanisms are known to contribute to second-order nonlinear current: Extrinsic
nonlinear Drude, Berry curvature dipole, and intrinsic Berry connection polarizability. Here …
nonlinear Drude, Berry curvature dipole, and intrinsic Berry connection polarizability. Here …
Quantum geometry induced third-order nonlinear transport responses
Nonlinear transport phenomena offer an exciting probe into the band geometry and
symmetry properties of a system. While most studies on nonlinear transport have looked at …
symmetry properties of a system. While most studies on nonlinear transport have looked at …
Dominance of Extrinsic Scattering Mechanisms in the Orbital Hall Effect: Graphene, Transition Metal Dichalcogenides, and Topological Antiferromagnets
The theory of the orbital Hall effect (OHE), a transverse flow of orbital angular momentum
(OAM) in response to an electric field, has concentrated on intrinsic mechanisms. Here …
(OAM) in response to an electric field, has concentrated on intrinsic mechanisms. Here …
Nonlinear magnetoconductivity in Weyl and multi-Weyl semimetals in quantizing magnetic field
Magnetotransport and magneto-optics experiments offer a very powerful probe for studying
the physical properties of materials. Here, we investigate the second-order nonlinear …
the physical properties of materials. Here, we investigate the second-order nonlinear …
Determination of spin-orbit interaction in semiconductor nanostructures via nonlinear transport
We investigate nonlinear transport signatures stemming from linear and cubic spin-orbit
interactions in one-and two-dimensional systems. The analytical zero-temperature response …
interactions in one-and two-dimensional systems. The analytical zero-temperature response …
Orbital angular momentum of Bloch electrons: equilibrium formulation, magneto-electric phenomena, and the orbital Hall effect
The investigation of orbital angular momentum (OAM) of delocalised Bloch electrons has
advanced our understanding of magnetic, transport, and optical phenomena in crystals …
advanced our understanding of magnetic, transport, and optical phenomena in crystals …
Quantum kinetic theory of nonlinear optical currents: Finite Fermi surface and Fermi sea contributions
The quantum kinetic framework provides a versatile method for investigating the dynamical
optical and transport currents of crystalline solids. In this paper, starting from the density …
optical and transport currents of crystalline solids. In this paper, starting from the density …
[PDF][PDF] Intrinsic nonlinear conductivity induced by the quantum metric dipole
The nonlinear current to second-order in the electric field is known to originate from three
different physical mechanisms: extrinsic i) nonlinear Drude and ii) Berry curvature dipole …
different physical mechanisms: extrinsic i) nonlinear Drude and ii) Berry curvature dipole …
Covariant derivatives of Berry-type quantities: Application to nonlinear transport
The derivatives of the Berry curvature $\Omega $ and intrinsic orbital magnetic moment m in
momentum space are relevant to various problems, including the nonlinear anomalous Hall …
momentum space are relevant to various problems, including the nonlinear anomalous Hall …