Poster

Competing interactions in quantum spin systems with geometric frustration can lead to disordered but highly correlated spin states. For decades, experimental research on antiferromagnetic (AFM) quantum kagome materials has been driven primarily by the hunt for the quantum spin liquid (QSL) ground state. [...]

POLI is a hot neutron two-axis diffractometer at the Heinz Maier-Leibnitz Zentrum (MLZ), Germany, which uses spin-polarized neutrons for magnetic studies in particular. The instrument is used, for instance, to study complex magnetic structures, to reconstruct magnetization densities in the unit cell, and to explore phase diagrams of materials via multiparameter studies. [...]

Hole-doped nickelates, isostructural to cuprates, are a strongly correlated electron system thatexhibits charge order as well as peculiar spin dynamics associated with the doping level. The holedoping can be made with introduction of cations like Sr (quenched disorder), by oxygen overstoichiometry(annealed disorder) or both [...]

Neutrons are scattered from the nuclei and x-rays are scattered from the electrons of the atoms in a protein crystal. This renders these two scattering probes as being complementary to each other. [...]

Neutron protein crystallography requires a highly brilliant beam in order to measure very small biological single crystals, which typically measure between 0.01 and 1 mm³. Additionally, these crystals have a large unit cell size, which may be as large as 200 Å in at least one dimension. [...]

We present the hot neutron two-axis diffractometer POLI, which uses spin-polarized neutrons for magnetic studies in particular. We give an overview on the capabilities as well as recent upgrades of the instrument..