36 citations · 180 across the 13 of their papers we have counts for
13 papers
Frequency-independent terahertz anomalous Hall effect in DyCo, CoFe and GdFe thin films from DC to 40 THz
Tom S. Seifert, Ulrike Martens, Florin Radu +11
The anomalous Hall effect (AHE) is a fundamental spintronic charge-to-charge-current conversion phenomenon and closely related to spin-to-charge-current conversion by the spin Hall…
Microscopic theory of refractive index applied to metamaterials: Effective current response tensor corresponding to standard relation
G. A. H. Schober, R. Starke
In this article, we first derive the wavevector- and frequency-dependent, microscopic current response tensor which corresponds to the "macroscopic" ansatz $\vec D = \varepsilon_0…
Wavevector-dependent optical properties from wavevector-independent proper conductivity tensor
Ronald Starke, Giulio A. H. Schober, René Wirnata +1
We discuss the calculation of the refractive index by means of the ab initio scalar dielectric function and point out its inherent limitations. To overcome these, we start from the…
Why history matters: ab initio rederivation of Fresnel equations confirms microscopic theory of refractive index
R. Starke, G. A. H. Schober
We provide a systematic theoretical, experimental, and historical critique of the standard derivation of Fresnel's equations, which shows in particular that these well-established…
General form of the full electromagnetic Green function in materials physics
G. A. H. Schober, R. Starke
In this article, we present the general form of the full electromagnetic Green function which is suitable for the application in bulk materials physics. In particular, we show how…
Linear electromagnetic wave equations in materials
R. Starke, G. A. H. Schober
After a short review of microscopic electrodynamics in materials, we investigate the relation of the microscopic dielectric tensor to the current response tensor and to the full el…
Covariant Response Theory and the Boost Transform of the Dielectric Tensor
R. Starke, G. A. H. Schober
After a short critique of the Minkowski formulae for the electromagnetic constitutive laws in moving media, we argue that in actual fact the problem of Lorentz-covariant electromag…
Ab initio electronic structure and optical conductivity of bismuth tellurohalides
Sebastian Schwalbe, René Wirnata, Ronald Starke +2
We investigate the electronic structure, dielectric and optical properties of bismuth tellurohalides BiTeX (X = I, Cl, Br) by means of all-electron density functional theory. In pa…
Ab initio materials physics and microscopic electrodynamics of media
R. Starke, G. A. H. Schober
We argue that the amazing progress of first-principles materials physics necessitates a revision of the Standard Approach to electrodynamics of media. We hence subject this Standar…
Response Theory of the Electron-Phonon Coupling
R. Starke, G. A. H. Schober
This article presents a systematic theoretical enquiry concerning the conceptual foundations and the nature of phonon-mediated electron-electron interactions. Starting from the fun…
Microscopic Theory of the Refractive Index
R. Starke, G. A. H. Schober
We examine the refractive index from the viewpoint of modern first-principles materials physics. We first argue that the standard formula, $n^2 = \varepsilon_{\mathrm r} μ_{\mathrm…
Relativistic covariance of Ohm's law
R. Starke, G. A. H. Schober
The derivation of Lorentz-covariant generalizations of Ohm's law has been a long-term issue in theoretical physics with deep implications for the study of relativistic effects in o…
Functional Approach to Electrodynamics of Media
R. Starke, G. A. H. Schober
In this article, we put forward a new approach to electrodynamics of materials. Based on the identification of induced electromagnetic fields as the microscopic counterparts of pol…