A5009542675- 2D Materials and Applications
- Topological Materials and Phenomena
- Graphene research and applications
- Advanced Condensed Matter Physics
- Electronic and Structural Properties of Oxides
- Magnetic properties of thin films
- Characterization and Applications of Magnetic Nanoparticles
- High-pressure geophysics and materials
University of Stuttgart
2019-2021
Max Planck Institute for Solid State Research
2019-2021
Bilkent University
2017
This paper reveals how the electronic structure, magnetic and topological phase of two-dimensional (2D), single-layer structures bismuth are modified by point defects. We first showed that a free-standing, single-layer, hexagonal structure bismuth, named h-bismuthene, exhibits nontrivial band topology. then investigated interactions between single foreign adatoms bismuthene structures, which comprise stability, bonding, structures. Localized states in diverse locations gap resonant continua...
We study the occurrence of symmetry-enforced topological band crossings in tetragonal crystals with strong spin-orbit coupling and time-reversal symmetry. By computing momentum dependence symmetry eigenvalues global topology entire Brillouin zone, we determine all space groups. In particular, classify Dirac Weyl degeneracies on points, lines, planes, find a rich variety degeneracies. This includes, among others, double fourfold quadruple nodal as well planes. For groups minimal number points...
Nonsymmoprhic symmetries, such as screw rotations or glide reflections, can enforce band crossings within high-symmetry lines planes of the Brillouin zone. When these degeneracies are close to Fermi energy, they give rise a number unusual phenomena: e.g., anomalous magnetoelectric responses, transverse Hall currents, and exotic surface states. In this paper, we present comprehensive classification nonsymmorphic in trigonal materials with strong spin-orbit coupling. We find that systems there...
The significance of Mendeleev's periodic table extends beyond the classification elements; it lies in its remarkable predictive power for discovering new elements and properties, revealing underlying symmetrical patterns nature that were only fully understood with advent quantum mechanics. Fundamental material such as electron transport magnetism, are also governed by crystal symmetry. In particular, spin depends on polarization electronic states, recently discovered materials where is...
We present a comprehensive study on the silver bismuthate ${\mathrm{Ag}}_{2}{\mathrm{BiO}}_{3}$, synthesized under high-pressure, high-temperature conditions, which has been subject of recent theoretical work topologically complex electronic states. x-ray photoelectron spectroscopy results showing two different bismuth states and absorption oxygen $K$ edge holes in bands. These support bond disproportionated state with atoms for ${\mathrm{Ag}}_{2}{\mathrm{BiO}}_{3}$. estimate band gap...