Phys. Rev. Lett. 85, 2573–2576 (2000)Relaxation of Polarized Nuclei in Superconducting RhodiumReceived 8 March 2000; published in the issue dated 18 September 2000 Nuclear spin lattice relaxation rates were measured in normal and superconducting (sc) rhodium with nuclear polarizations up to p = 0.55. This was sufficient to influence the sc state of Rh, whose Tc and Bc are exceptionally low. Because Bc≪Bloc and the short-range spin-spin interaction is unchanged, the nuclear spin entropy was fully sustained across the sc transition. The relaxation in the sc state was slower at all temperatures without the coherence enhancement close to Tc. Nonzero nuclear polarization strongly reduced the difference between the relaxation rates in the sc and normal states. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.2573
DOI:
10.1103/PhysRevLett.85.2573
PACS:
74.25.Nf, 74.25.Ha, 76.60.Es
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