The Centre for Molecular and Materials Science (CMMS) provides unique tools for Canadian and international scientists to better understand matter at the microscopic level. We provide intense spin-polarized beams of muons (µ+ or µ) and lithium-8 (8Li), which are implanted into a material and characterized with novel magnetic resonance techniques known as µSR (muon spin rotation / relaxation / resonance) and βNMR (beta-detected nuclear magnetic resonance). µSR and βNMR can provide unique information about a wide range of materials (magnetic systems, superconductors, semiconductors, batteries and free radicals) that is unavailable with conventional spectroscopic methods.

Recent Highlights

μSR study of the dipole-octupole quantum spin ice candidate Ce2Zr2O7
J. Beare, et al.
Phys. Rev. B 108, 174411 (2023). doi:10.1103/physrevb.108.174411

Difluoromethylborates and muonium for the study of isonitrile insertion affording phenanthridines via imidoyl radicals
K. Konagaya et al.
J. Org. Chem. 88, 8042–8054 (2023). doi:10.1021/acs.joc.3c00056

Competition between magnetic interactions and structural instabilities leading to itinerant frustration in the triangular lattice antiferromagnet LiCrSe2
E. Nocerino et al.
Communications Materials 4 (2023). doi:10.1038/s43246-023-00407-x

Ubiquitous spin freezing in the superconducting state of UTe2
S. Sundar et al.
Communications Physics 6 (2023). doi:10.1038/s42005-023-01146-8

The next Molecular and Materials Science Experiments Evaluation Committee (MMS-EEC) meeting will take place on July 12th, 2024.


  • As of 2019, TRIUMF CMMS will no longer charging academic researchers for liquid helium or other user fees.

  • The procedures for visiting scientists have been changed. Please contact I. McKenzie to request an invitation. Once you have received the invitation you must fill in your details on the Visitor App. Group leaders will be able to invite subordinates. Your training status can be found here. You must review the safety orientation before site access is permitted. You must have valid Personnel Safety Alarms and Basic Radiation Protection training before coming to TRIUMF. A further hands-on test is required to access exclusion areas.

  • TRIUMF, µSR and βNMR

    Applying for Beamtime

    Facility Resources

    Running Experiments

    Discovery, accelerated

    Centre for Molecular and Materials Science
    4004 Wesbrook Mall
    Vancouver, B.C. Canada V6T 2A3