Momentum Microscopy
About
Quantum materials are considered a key resource for the 21st century, promising a wealth of novel phenomena with respect to spin transport, magnetism, and new topological states of matter. We use spin- and time-resolving momentum microscopy to map the underlying spin- and electron-states in detailed images of the electronic structure of novel material classes, and to record their ultrafast quantum dynamics. This detailed information allows us to investigate the microscopic mechanisms for the emergence of non-trivial quantum phases and dynamic control channels, fundamentally driven by the complex interplay of exchange interaction, spin-orbit coupling, and symmetry.
Research Topics
The microscopic driving forces for many quantum phenomena in solids are the competition of various spin-dependent interactions on different length scales. They not only lead to a peculiar dispersion of the electronic states associated with Dirac and Weyl materials, but also to complex spin textures in momentum space. We investigate how the interplay with external parameters like magnetism and symmetry allows a control over emergent quantum states in such materials. Reaching out to an ultrafast timescale, we study the dynamics of transient quantum states by use of a set of in-house laser light sources, as well as free-electron-laser facilities.
More information: https://momentum-microscopy.fz-juelich.de/
Members
Please refer to: https://momentum-microscopy.fz-juelich.de/publications/