Anomalous Nuclear Spin-Lattice Relaxation in the Mixed State of Superconducting Niobium
- 16 June 1969
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 22 (24), 1300-1303
- https://doi.org/10.1103/PhysRevLett.22.1300
Abstract
The spin-lattice relaxation time in the mixed state of niobium metal has been observed to depart at high temperatures from the temperature and field dependence predicted by the theory of gapless superconductivity. This anomaly indicates either a breakdown of the gapless theory or, more plausibly, the existence of a new relaxation mechanism at high temperatures.
Keywords
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