Magnetic Excitons in Singlet—Ground-State Ferromagnets
- 29 November 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 27 (22) , 1530-1533
- https://doi.org/10.1103/physrevlett.27.1530
Abstract
We report measurements of the dispersion of singlet-triplet magnetic excitons as a function of temperature in the singlet-ground-state ferromagnets fcc Pr and T1. Well-defined excitons are observed in both the ferromagnetic and paramagnetic regions, but with energies which are nearly temperature independent, in disagreement with existing theory.
Keywords
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