The PSI Laboratory for Muon Spin Spectroscopy uses the fundamental particles from the Swiss Muon Source SµS to investigate matter and materials.
Call for Proposals
Next Deadline: Call 2/2026 June 01, 2026.
- The 1st call (1/2026) for the year 2026 is closed.
- Note: Allocation period for call 1/2026: June 2026 - September 2026.
- Note: Allocation period for call 2/2026: October 2026 - December 2026.
- Experiment schedules
The technique "µSR" - Muon Spin Rotation, Relaxation or Resonance
A research tool using muons as sensitive local magnetic probes in matter.
Worldwide unique instruments:
The Low-Energy Muon (LEM) beam and µSR Spectrometer for the study of thin films, layers and surfaces;
the high-field instrument (HAL-9500) equipped with specially designed detectors to perform studies in fields up to 9.5 Tesla and at very low temperatures;
and the combination of very-high pressures (up to 2.8 GPa) combined with sub-Kelvin temperatures (GPD).
Lab News & Scientific Highlights
Oxygen-isotope effect on the density wave transitions in La3Ni2O7
The isotope effect is a powerful probe of electron-phonon interactions in solid-state systems, offering key insights into how atomic mass influences emergent quantum states. Here, the impact of oxygen-isotope substitution (16O→18O) on charge- and spin-density wave (CDW and SDW) transitions in the double-layer Ruddlesden-Popper nickelate La3Ni2O7 is investigated ...
Pressure and oxygen-isotope substitution on density-wave transitions in La4Ni3O10
Understanding the interplay between magnetism and superconductivity in nickelate systems is a key objective in condensed matter physics. Gaining microscopic insights into magnetism—particularly as it emerges near superconductivity—requires a synergistic approach that combines complementary experimental techniques with controlled tuning of external parameters. In this paper, we present ...
Niobium’s intrinsic coherence length and penetration depth revisited using low-energy muon spin spectroscopy and secondary-ion mass spectrometry
We report direct, simultaneous measurements of the London penetration depth (λL ) and Bardeen-Cooper-Schrieffer coherence length (ξ0) in oxygen-doped niobium, with impurity concentrations spanning the “clean”to “dirty” limits ...