Conveners
Solid State Physics
- Juliana Schell (Institut Fur Materialwissenschaft Universität Duisburg-Essen (DE))
Topological insulators (TIs) represent a state of matter in which the material bulk has insulating properties while the surface hosts highly conducting states [1]. In TIs, the presence of Dirac-like dispersed surface states jointly with the large spin–orbit coupling provides the so-called spin-momentum locking and generates topologically protected surface states [1]. Within this talk I will...
Time differential Perturbed Angular Correlation (PAC) of γ-rays spectroscopy may be applied to study the coordination geometry and dynamics at metal ion binding sites of proteins [1-2]. Selected examples relating to recent $^{199m}$Hg and $^{111}$Ag PAC experiments will be presented, such as 1) Ag(I) binding to human serum albumin - the major transport protein in blood; 2) A potential...
emphasized textGroup-IV vacancy centers in the so-called “split-vacancy configuration” in diamond are of high interest as spin-photon interfaces for a number of quantum applications, such as quantum information processing and quantum communication, with a particular focus on quantum networks [1-3]. However, the reliable and reproducible fabrication of germanium-vacancy centers has remained a...
This work presents the study of the local electric and magnetic fields in multiferroic bismuth ferrite (BiFeO3: BFO) using Time Differential Perturbed Angular Correlation (TDPAC) spectroscopy. The measurements were carried out at a wide range of temperatures up to 850oC, after the implantation of various radioactive tracer ions: 181Hf, 111In and 111mCd. The experimental results reflect the...
Naturally layered perovskite phases such as the Ruddlesden-Popper present an inspiring route to achieve unique magneto-electric, ferroelectric–photovoltaic or negative thermal expansion effects, among others. In these structures, the rotations of the disconnected perovskite octahedra can lead to different symmetry groups, polar and non-polar, and different magnetic orders adding extra pathways...
