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
Myonen erhalten Förderung des Schweizerischen Nationalfonds
Das PSI erhält einen NCCR: Mit dem Projekt «Muoniverse» wird die Forschung an den Strahllinien für Elementarteilchen namens Myonen weiter ausgebaut – an der weltweit führenden Anlage für Myonenstrahlen.
Advanced muon-spin spectroscopy with high lateral resolution using Si-pixel detectors
Muon-spin spectroscopy at continuous sources has stagnated at a stopped muon rate of ∼40kHz for the last few decades. The major limiting factor is the requirement of a single muon in the sample during the typical 10µsdata gate window. To overcome this limit ...
Surface-localized magnetic order in RuO2 thin films revealed by low-energy muon probes
Ruthenium dioxide (RuO2) has recently emerged as an altermagnetic candidate, but its intrinsic magnetic ground state in thin films remains widely debated. This study aims to clarify the nature and spatial extent of the magnetic order in RuO2thin films grown under different conditions ...