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Termine

Konferenzen

SANS-Workshop 21./22. Juni
21. Juni - 22. Juni

Seminare

Commissioning of the CASCADE detector at MIRA
04. Juni 14:45 - 15:45

Structural and dynamic study of several magnetic systems by means of Neutron Resonant Spin Echo techniques
11. Juni 14:45 - 15:45

“ZETA” is a Neutron Resonant Spin Echo (NRSE) option which is currently installed on the thermal...
Macromolecular crystallography at the European Spallation Source
18. Juni 14:45 - 15:45

The structure determination of biological macromolecules by X-ray crystallography is a key...
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DNS

Diffuse Neutronenstreuung

Typical applications

With the increased flux and efficiency at FRM II, DNS becomes ideal for the studies of complex spin correlations, such as in highly frustrated magnets and strongly correlated electrons, as well of the structures of soft condensed matter systems, such as the nanoscale confined polymers and proteins, via polarization analysis. The exploration of unusual magnetic properties can also be efficiently undertaken on single-crystal samples by reciprocal space mapping. In addition to the separation of magnetic cross section from nuclear and spin-incoherent ones, polarization analysis also allows to distinguish in detail the anisotropy of spin correlations. It has also been well demonstrated that polarized powder diffraction on DNS is complementary to standard neutron powder diffraction and may be extremely useful for magnetic structure refinements, particularly in case of small moments by improving the signal to background ratio. DNS also represents a powerful instrument for the soft condensed matter community for the separation of nuclear coherent scattering from often dominating spin incoherent scattering background. The main applications can be summarized as the follows,

  • Application of polarization analysis: uniaxial-, longitudinal- and vector-PA
  • Magnetic, lattice and polaronic correlations: geometrically frustrated magnets, strongly correlated electrons, emergent materials
  • Single-crystal and powder time-of-flight spectroscopy: single-particle excitations, magnons and phonons
  • Soft condensed matters: separation of coherent scattering from hydrogenous materials, polymer, liquids and glasses

Dr. Yixi Su

Telefon: +49 89 289- 10714

E-Mail: yixi.su@frm2.tum.de / y.su@fz-juelich.de