Method and system for determining at least one property of magnetic matter

A system, comprising:

• at least one processor;
• and
• a memory communicatively coupled with the at least one processor and storing machine-readable instructions that, when executed by the at least one processor, control the system to:
• apply a magnetic field onto magnetic matter;
• direct first light onto the magnetic matter at a first set of incident angles;
• receive a first set of signatures associated with the first light scattered from the magnetic matter;
• vary an orientation of the magnetic matter with respect to the magnetic field;
• direct second light onto the magnetic matter at a second set of incident angles;
• receive a second set of signatures associated with the second light scattered from the magnetic matter;
• map the first set of signatures and the second set of signatures to a first set of spin waves and a second set of spin waves, respectively;
• and
• determine at least one property of the magnetic matter by fitting the first set of spin waves and the second set of spin waves to a dispersion relation.