12 citations · 14 across the 6 of their papers we have counts for
6 papers
Multi-photon schemes for mid-infrared detection : Comparative study of bulk GaAs and GeSn
Alistair H. Duff, J. E. Sipe
We calculate the theoretical non-degenerate two photon absorption and three color injected current response tensors for bulk GaAs and GeSn for a range of alloy composit…
Frequency Dependent Magnetic Susceptibility and the effective conductivity tensor
Alistair H. Duff, J. E. Sipe
We apply a microscopic formalism for the calculation of material response properties to the problem of the generalization of a first-principles, i.e based on the energy spectrum an…
Linear response of a Chern insulator to finite-frequency electric fields
Jason G. Kattan, Alistair H. Duff, J. E. Sipe
We derive the macroscopic charge and current densities of a Chern insulator initially occupying its electronic ground state as it responds to a finite-frequency electric field; we…
Proof of Gauge-Invariance of Magnetic Susceptibility of Topologically Trivial Insulators in the Independent Particle Approximation
Alistair H. Duff, J. E. Sipe
We have derived an expression for the magnetic susceptibility of topologically trivial insulators, however an important consideration for any response tensor is whether it is gauge…
Microscopic Theory of the Magnetic Susceptibility of Insulators
Alistair H. Duff, Aidan Lau, J. E. Sipe
We present a general theory of the magnetic susceptibility of insulators that can be extended to treat spatially varying and finite frequency fields. While there are existing resul…
Magnetoelectric polarizability and optical activity: spin and frequency dependence
Alistair H. Duff, J. E. Sipe
We extend a microscopic theory of polarization and magnetization to include the spin degree of freedom of the electrons, introducing a general spin orbit coupling and Zeeman intera…