MIEZE Neutron Spin-Echo Spectroscopy of Strongly Correlated Electron Systems

TL;DR

This paper reviews recent advancements in MIEZE neutron spin-echo spectroscopy, highlighting its technical capabilities, experimental applications in strongly correlated electron systems, and its wide dynamic range and versatility in various sample environments.

Contribution

It provides a comprehensive overview of MIEZE spectroscopy's technical features, experimental applications, and benchmarking results in strongly correlated electron systems.

Findings

Demonstrated MIEZE's wide dynamic range over seven orders of magnitude.

Showcased applications in magneto-elastic coupling and skyrmion lattice studies.

Benchmarking of molecular dynamics in H2O.

Abstract

Recent progress in neutron spin-echo spectroscopy by means of longitudinal Modulation of IntEnsity with Zero Effort (MIEZE) is reviewed. Key technical characteristics are summarized which highlight that the parameter range accessible in momentum and energy, as well as its limitations, are extremely well understood and controlled. Typical experimental data comprising quasi-elastic and inelastic scattering are presented, featuring magneto-elastic coupling and crystal field excitations in Ho2Ti2O7, the skyrmion lattice to paramagnetic transition under applied magnetic field in MnSi, ferromagnetic criticality and spin waves in Fe. In addition bench marking studies of the molecular dynamics in H2O are reported. Taken together, the advantages of MIEZE spectroscopy in studies at small and intermediate momentum transfers comprise an exceptionally wide dynamic range of over seven orders of magnitude, the capability to perform straight forward studies on depolarizing samples or under depolarizing sample environments, as well as on incoherently scattering materials.