1.6k citations · 3.8k across the 28 of their papers we have counts for
11 papers · 1 filter
Quantum skyrmion Hall effect
Ashley M. Cook
We consider the problem of magnetic charges in dimensions for a torus geometry in real-space, subjected to an inverted Lorentz force due to an external electric field appli…
Two-dimensional type-II Dirac fermions in layered oxides
M. Horio, C. E. Matt, K. Kramer +11
Relativistic massless Dirac fermions can be probed with high-energy physics experiments, but appear also as low-energy quasi-particle excitations in electronic band structures. In…
Numerical investigation of gapped edge states in fractional quantum Hall-superconductor heterostructures
C. Repellin, A. M. Cook, T. Neupert +1
Fractional quantum Hall-superconductor heterostructures may provide a platform towards non-abelian topological modes beyond Majoranas. However their quantitative theoretical study…
Magnetic Weyl and Dirac Kondo semimetal phases in heterostructures
Seulgi Ok, Markus Legner, Titus Neupert +1
We study a layered three-dimensional heterostructure in which two types of Kondo insulators are stacked alternatingly. One of them is the topological Kondo insulator SmB 6 , the ot…
Determination of Hund's coupling in 5d Oxides using Resonant Inelastic X-ray Scattering
Bo Yuan, J. P. Clancy, A. M. Cook +10
We report resonant inelastic X-ray scattering (RIXS) measurements on ordered double perovskite samples containing Re and Ir with and electronic configur…
Individual band with higher Chern numbers in double perovskite {001} monolayers
A. M. Cook
We show a tight-binding model for double perovskite monolayers grown in the {001} crystallographic direction can exhibit higher Chern numbers for the lowest band of the model dispe…
Highly-anisotropic exchange interactions of iridium moments on the fcc lattice in LaIrO ( Mg, Zn)
A. A. Aczel, A. M. Cook, T. J. Williams +6
We have performed inelastic neutron scattering (INS) experiments to investigate the magnetic excitations in the weakly distorted face-centered-cubic (fcc) iridate double perovskite…
Dominant Kitaev interactions on the fcc lattice in iridate double perovskites La2BIrO6 (B=Mg, Zn)
A. A. Aczel, A. M. Cook, T. J. Williams +6
We have performed inelastic neutron scattering experiments to investigate the magnetic excitations in the quasi-face-centered-cubic (fcc) iridate double perovskites La2ZnIrO6 and L…
Emergent dome of nematic order around a quantum anomalous Hall critical point
A. M. Cook, C. Hickey, A. Paramekanti
We consider a model of spinful fermions on the triangular lattice which exhibits a C=2 Chern insulator (CI) phase with a quantized anomalous Hall effect, sandwiched between two nor…
Double perovskite heterostructures: Magnetism, Chern bands, and Chern insulators
A. M. Cook, A. Paramekanti
Experiments demonstrating the controlled growth of oxide heterostructures have raised the prospect of realizing topologically nontrivial states of correlated electrons in low dimen…
Spin-orbital locked magnetic excitations in a half-metallic double perovskite Ba2FeReO6
K. W. Plumb, A. M. Cook, J. P. Clancy +5
We present a powder inelastic neutron scattering study of magnetic excitations in BaFeReO, a member of the double perovskite family of materials which exhibit half-metallic…