Direct-Process NMR Relaxation by Spin Waves in a One-Dimensional Antiferromagnet
- 19 June 1972
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 28 (25), 1646-1649
- https://doi.org/10.1103/physrevlett.28.1646
Abstract
Measurements of the proton relaxation time in NMn are reported as a function of temperature between 4.0 and 1.2 K. Results are interpreted in terms of a direct relaxation process with spin waves in a one-dimensional antiferromagnet. They represent the first observation of direct-process NMR relaxation by magnons in any system and show that any gap in the spectrum at has to be less than 0.07 meV.
Keywords
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