Maria Azhar

Maria Azhar

Maria Azhar

Position

Junior Research Leader

Email 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

Address
Lotharstraße 1
47057 Duisburg
Room
MG 386

Functions

  • Wissenschaftliche/r Mitarbeiter/in, Arbeitsgruppe Prof. Everschor-Sitte

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.