Maria Azhar
Maria Azhar
| Position |
Junior Research Leader |
| maria.azhar@uni-due.de | |
| Phone | 0203-379-4726 |
| Office | MG 386 |
| Address | Twist Group, Faculty of Physics University of Duisburg-Essen Campus Duisburg Lotharstraße 1 D 47057 Duisburg |
| Contact | ORCID-ID: 0000-0001-6965-2435 Google Scholar Profile |
Fakultät für Physik, Theoretische Physik
47057 Duisburg
Functions
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Wissenschaftliche/r Mitarbeiter/in, Arbeitsgruppe Prof. Everschor-Sitte
Current lectures
Past lectures (max. 10)
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SoSe 2025
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WiSe 2024
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SoSe 2024
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WiSe 2023
The following publications are listed in the online university bibliography of the University of Duisburg-Essen. Further information may also be found on the person's personal web pages.
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Numerical calculation of the Hopf index for three-dimensional magnetic texturesIn: Physical Review B, Vol. 111, 2025, Nr. 13, 134408DOI (Open Access)
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Rethinking Linking : Topology in Magnetism, and PlasmonicsIn: Proccedings of the 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2025) / 15th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2025); July 22-25, 2025; Torremolinos, Spain / Mnaymneh, Khaled; Zouhdi, Said (Eds.), 2025, pp. 106 – 107Online Full Text (Open Access)
Journal articles
Book articles / Proceedings papers
My research lies within the broader field of “theory of condensed matter” and more specifically “topology in magnetic materials”, focusing on understanding the physics of these materials, using analytical and numerical simulation techniques.
Topological textures and defects arise as a consequence of a broken continuous symmetry. In a continuum theory for magnetism, the magnetism is a SO(2) order parameter and its magnitude, |m|, takes one value. Corresponding to this broken symmetry, the conserved quantity is the skyrmion number or total solid angle enclosed by spins that lie on a surface. Other topological spin textures known as Hopfions are characterised by an integer Hopf index. More recently, in helimagnets, new topological defects such as screw dislocations have been discovered, where the 1-dimensional spiral period breaks continuous translational symmetry and stabilises a family of topological defects with a integer Burgers vector. In my research I study how topological spin textures are stabilised, and how they are characterised using a combination of analytical and numerical methods.